[MEI-L] clef as milestone element; multiple clefs on a staff

Byrd, Donald A. donbyrd at indiana.edu
Wed Jun 8 02:16:41 CEST 2011


On Tue, 7 Jun 2011 22:03:37 +0000, "Andrew Hankinson, Mr" 
<andrew.hankinson at mail.mcgill.ca> wrote:

>
> On 2011-06-07, at 4:24 PM, TW wrote:
>
>> 2011/6/7 Laurent Pugin <laurent at music.mcgill.ca>:
>>> On Tue, Jun 7, 2011 at 11:22 AM, Johannes Kepper <kepper at edirom.de> wrote:
>>>>
>>>> Am 07.06.2011 um 11:03 schrieb Laurent Pugin:
>>>>
>>>> Although I have no example in mind currently, I'm pretty sure that
>>>> I've seen multiple clefs on one staff for different voices (that
>>>> is, layers).
>>>
>>> Yes, I am aware of such cases.

My "Gallery of Interesting Music Notation"

  http://www.informatics.indiana.edu/donbyrd/InterestingMusicNotation.html

shows a very obvious example (from Debussy) and a much more subtle one 
(Ravel). And the attached document, inelegantly titled "More 
Counterexamples in Conventional Music Notation", lists 10 more examples 
from music by Brahms, Dvorak, Rachmaninoff, etc. There are really a 
couple of fairly distinct cases, which it discusses briefly.

--Don


>>>
>>
>> I think I've seen something similar to this:
>>
>> http://imageshack.us/photo/my-images/101/shiftedclef.png
>>
>> (I made this up.)  I.e. strictly speaking wrong use of the F clef, but
>> the piano player immediately knows what's meant.  Should this be
>> covered?  If yes, should there be a clef/@line.ges attribute, and
>> should the restrictions on clef/@line be relaxed (i.e. integer instead
>> of positive integer in the range of the number of lines?
>
> You will need to have some notion of ledger lines, so yes, you should
> be able to specify negative numbers as the line.
>
>
>
>>
>>>
>>> It looks like a good solution to me. I would vote for <clef>, but
>>> <clefIndication> would be fine too. Maybe we can think of another
>>> @reason value. What about reason="sb"?
>>>
>>
>> A fundamental question:  Why "sb" rather than "systembreak"?  I
>> personally prefer descriptive naming where you don't have to guess.
>> For example, I have no idea what note/@accid="tb" is meant to mean.
>> It's not documented either.  Of course one can add an explanation to
>> the documentation, but I find it much more accessible to have a
>> meaningful attribute or tag name in the first place.
>
> <sb /> follows the convention of the "b", or "breaking" indicators,
> like "<br />" and "<lb />" (for line breaks) and <pb /> for page
> breaks. This is largely started in HTML and inherited through TEI.
>
> "tb" on accid stands for "Triple Flat" in MEI 2010. "tf" is now also
> allowed in the upcoming release for consistency with "f", "ff" and
> "nf".
>
> Ultimately, and this is something that I think needs bearing in mind,
> XML is *not* supposed to be meant for human consumption first -- it's
> meant for computer consumption. I may be opening up a new can of
> worms, world of hurt, and pouring lemon juice in old wounds
> simultaneously, but my feeling is that if you want to create a system
> break, you (as a programmer) would call "createSystemBreak()" in some
> library and it will do all the necessary checking and insertion for
> you. Most people will then just need to click a button to insert a
> system break.
>
> With MEI, though, we're at the stage where there are no real software
> libraries that will produce this, so we're left to hand encoding
> them. Frankly, I don't think this is a healthy position to maintain
> outside of a few specialized projects. My expectation is that we'll
> be producing software to automatically read and write MEI in the very
> near future.
>
> All this is to say the difference between "<sb />" and "<systembreak
> />" is a human-oriented difference specifically for hand-encoders. I
> know that technically we could replace *everything* with numbers if
> all we're concerned with is computer readability, but I think it
> still needs to be somewhat legible for the early adopters and
> software implementers to get their heads around. After that, though,
> most people will be generating MEI through other means.
>
> -Andrew
>
>>
>> Thomas
>>
>> _______________________________________________
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>
>
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>



--
Donald Byrd
Woodrow Wilson Indiana Teaching Fellow
Adjunct Associate Professor of Informatics & Music
Indiana University, Bloomington
-------------- next part --------------
MORE COUNTEREXAMPLES IN CONVENTIONAL MUSIC NOTATION: a supplementary list
by Donald Byrd, Indiana University, Bloomington
Revised mid February 2011

This is a supplement to the list of "counterexamples" in Sec. 2.5 of my dissertation,
Music Notation by Computer (Byrd, 1984). (The term "counterexample" is borrowed from
mathematics and mathematical logic.) As that section states, these are "examples of
published music...intended to counter the view that CMN, while it may have many complex
details, is in principle easily mechanizable". I restrict CMN to the period from about
1700 to 1935. These examples are virtually all from music published by respectable
publishers, and the vast majority are by well-known, mainstream composers. They cast
doubt on the idea that CMN can be easily mechanized by breaking many of the supposed
rules of music notation, including some that (in my experience) few musicians would
expect to see _any_ exceptions to, at least in publications like these.

My dissertation comments that "this collection is far from exhaustive: it is based on an
examination of a minute fraction of the relevant musical literature." The same statement
applies to this supplement.

A handful of these counterexamples are discussed in Byrd (1994).

A related collection of examples of unusual music notation appears in Byrd (2007). That
collection concentrates not on rule-breaking notation but on extreme usage of notation
wtihin the rules, e.g., shortest note duration, most independent voices on a staff.
However, the dividing line between extremes and rule-breaking isn't always clear.

See also Byrd (2008a) and my list of Music Without Barlines (2008).

Thanks to Edward Auer, Lana Bode, Myke Cuthbert, Noam Elkies, Jay Hook, Thomas Loewenheim,
David Meredith, and Gabi Teodoru for their contributions (noted below).

Abbreviations:

Asterisk ("*") preceding an item indicates those I haven't seen personally.
"B&I 7.5" (and similar) means this notation is item 7.5 in Byrd & Isaacson (2005).
"B&M 1948" means the notation is visible in Barlow & Morgenstern (1948).
For edition, "Bo+H" = Boosey & Hawkes; "Br+H" = Breitkopf & Haertel.


(1) Collisions.

	Ravel: Gaspard de la Nuit (Durand ed.) (almost simultaneous intersections of two beams,
		two slurs, and hairpin)
	Scriabin: Piano Sonata no. 3 (Dover ed.), I, p. 49, top staff (double-dotted notes with
		a stem belonging to a note in another voice between the dots. I'm not sure if this
		is a perceptual collision as defined in my dissertation; it's more like a "perceptual
		interruption".)


(2) Linear Symbols Interrupted By Other Symbols.

	Bartok: 3 Burlesques, Op. 8C, I (barline and staff interrupted by clef)
	Chopin: Prelude in f, Op. 28 no. 18 (?? ed.) (beam interrupted by clef) (B&I 12.6?)
	Strauss: An Alpine Symphony, Op. 64, after RM 69 (barline and staff interrupted by clef)


(3) Symbols With Highly Nonstandard Shapes Or Positions (but minimal or no unusual semantics)

	Bartok: Two Rumanian Dances, Op. 8A no. 2 (compound beam)
	Berg: Violin Concerto (Universal ed.), p. 47 (one-to-many, many-to-one slurs jumping staves
		and parts, e.g., clarinet to bass clarinet or bassoon, celli to violins & violas(?))
		(B&I 17.6 EXTENDED)
	*Berio: Don{de} from Pli selon Pli, p. 15 (slur jumping from clarinet to bass clarinet,
		to play an out-of-range note) (NB: after 1935) (B&I 17.6 EXTENDED) [contrib. by Cuthbert]
	Brahms: Capriccio, Op. 76 no. 5 (International ed.), mm. 7-8 (stem only one space long)
	Chopin: Berceuse, Op. 57, p.1 (split-stem grace notes, for augmented unison??) (B&I 5.25)
	Chopin: Nocturne, Op. 27 no. 2 (augmented unison in 2-stem notation ??SPLIT STEM OR 2 VOICE?)
	Bizet: Jeux d'Enfants, p. ?? (slur with 5 inflection points) ??IS THIS REAL?
	Debussy: Prelude a l'apres-midi d'un faune, piano arrangement by Leonard Borwick, m. 100
		(in a 3-staff system, arpeggio sign with notes on the top & bottom staves but not the
		middle one)
	Haydn: Piano Sonata in E minor, Hoboken XVI, I (fermata over nothing, halfway between 2 rests)
	Verdi: Falstaff (publ.?), p. 203 (accents marks _obviously_ moved to avoid accessory numerals)
	Ravel: Gaspard de la Nuit (Durand ed.), Scarbo, p. 41 (slur with 3 inflection points)
		(B&I 17.17)
	Ravel: Gaspard de la Nuit (Durand ed.), Ondine, next-to-last page (slur backing up in the
		middle) (B&I 17.17)

Small notes with rhythmic values more-or-less like normal notes, excluding cadenza-like passages
entirely in small notes:
	Bartok: Dance in Bulgarian Rhythm no. 1, in Mikrokosmos (1926-39; Boosey & Hawkes ed.) Book 6,
		throughout, right hand (triplet of 3 16ths, the first full-size & the others small)
	Chopin: Prelude in f#, Op. 28 no. 8  (Br+H ed.), throughout, right hand (small 32nd notes
		regularly double-stemmed with longer normal notes when they coincide)
	Chopin: Prelude in d, Op. 28 no. 24  (Br+H, Paderewski eds.), several places (strings of
		beamed small eighth notes, sometimes starting with a full-size note)
	Chopin: Etude in A-flat, Op. 25 no. 1 ("Harp") (Paderewski ed.), throughout, right hand
		(beamed six-note groups of triplet 16th notes, the first full-size and the others small)
	Chopin: Scherzo in b-flat, Op. 31  (Br+H ed.), several places, right hand (passages of a couple
		of measures of all small notes)
	Debussy: Pour le Piano, I, mm. 148-156?? (small notes in a cadenza-like passage that seem
		to act like normal notes, interspersed with normal notes filling each measure's duration)
	Ives: Three Places in New England (Mercury Music ed.), I, p. 6, piano (psuedo-arpeggio of
		eighth-note dyads with upper note of each normal size, lower note small)
	Schumann: Carnaval (Kalmus/Clara Schumann ed.), Op. 9, no. 19 (Promenade), mm. 3-4, 11-12,
		etc. (small notes with simultaneous full-size rests on the same staff notes, but clearly
		intended to be played like normal notes, as if "cue" notes but for the same performer)
	Scriabin: Sonata no. 1, IV, beginning 52 mm. from the end (small notes that act just like
		normal notes)

(4) Rhythm Notation.

Chord with notes of different durations (B&I 4.28):
	Bartok: Sonata for Solo Violin (Boosey & Hawkes ed.), I (double-dotted quarters on same
		stem as undotted quarters)
	Brahms: Symphony no. 1 (Henle), I, 4th m. of Allegro, violin 1 (dotted quarters on same
		stem as undotted quarters)
	Brahms: Symphony no. 4 (Eulenberg ed.), IV, last chord, violins & violas (dotted halfs
		on same stem as undotted quarters)
	Chopin: Scherzo in B minor, Op. 20 (Br+H ed.) (half head on same stem as quarter; occurs
		several times)
	Chopin: Prelude in Db, Op. 28 no. 15 (Paderewski, Universal, Br+H eds.) (dotted-half head on
		same stem as dotted-8th)
	Mozart: Violin Concerto no. 3 in G, K.216 (Schirmer/Franko ed.), I, m.42, solo violin
		(half head on same stem as 2 quarters)
	Mozart: Piano Sonata no. 6 in D major, K. 284  (Alte Mozart-Ausgabe), III, variation 4
		(half head on same stem as quarter heads)
	Tchaikovsky: Symphony no. 2 (Eulenberg ed.), IV, mm. 3-4, violins, violas, celli (halfs
		on same stem as quarters)

Note with duration apparently extending across the following barline (cf. "impossible rhythm").
Many of these involve dotted notes where the dotted part of the duration is after the barline:
	Barber: Piano Sonata, I, p. 7 (notehead and double dots together before barline)  [contrib.
		by Meredith]
	Bartok: Violin Sonata no. 1 (Universal ed.), I (notehead before but dot after barline)
	Brahms: Symphony no. 1 (Eulenberg ed.), IV (notehead before but dot after barline)
	Chopin: Etude in A-flat, Op. 10 no. 10 (Paderewski, Henle eds.), beginning (it's in 12/8; the
		left hand plays continuous 8th notes, but the 4th and 10th of several mm. have half-note
		heads; in the Paderwski ed., they're also stemmed separately with augmentation dots)
		[contrib. by Hook]
	Chopin: Prelude in D, Op. 28 no. 5 (Paderewski, Universal, Br+H eds.), mm. 1-3, etc. (the last
		16th of the measure is double-stemmed as an 8th)
	Mozart: Piano Sonata in Eb, K.282 (Presser/Broder), III, mm. 48-54, right hand (notehead before
		but dot after barline)
	Mozart: String Quartet, K.465 (Br+H ed.), IV, last page (notehead before but dot after barline)
	
Note with duration arguably shorter than it appears. Usually this is because it otherwise extends
across the following barline but following events in the score indicate it should not be held for
the full notated duration (a type of "impossible rhythm"):
	Brahms: Variations on a Theme of Haydn, Op. 56, theme (breve in 2/4 time)
	Brahms: Capriccio, Op. 76 no. 1 (dotted half in 6/8 time starting a 16th after the downbeat,
		and tied to a note on the downbeat of the next measure; clearly it's intended to last only
		11 16ths instead of 12)
	Franck: Prelude, Chorale, & Fugue, Prelude, m. 48 (quarter notes overlapping with 32nd rests
		in the same voice; clearly they're intended to last only 7 32nds instead of 8) [contrib.
		by Hook]
	Verdi: Falstaff (Ricordi), last m. of Act I (breve in 6/8 time)
	Verdi: Falstaff (Ricordi), last m. of Act II (breve in 2/4 time)
	Verdi: Requiem (Dover), last page (breve in cut -- here unequivocally 2/2 -- time)
	
Time signature change in middle of measure (B&I 10.8):
	Beethoven: Piano Sonata, Op. 109, I & III 
	Beethoven: Piano Sonata, Op. 110, III (four times; the passage also has multiple mid-measure
		key changes)
	Beethoven: Piano Sonata, Op. 111, II (occurs at least twice)
	Handel: Keyboard suite no 5 in E major, last mvmt (a.k.a. "The Harmonious Blacksmith") (at
		join between Var. 2 and 3, right hand switches from C to 24/16 in mid-bar, left hand staying
		in C; between Var. 3 and 4, the hands switch time signatures in mid-bar; and between Var.
		4 and 5, left hand joins right hand's C in mid-bar) [contrib. by Elkies]
	Verdi: Falstaff (Ricordi), p. 71 (12/8 to C)
	Anonymous (folk song): Wassail Song (typically notated as 6/8 to 4/4)

Time signature with ambiguous measure duration
	Bach: Well-Tempered Clavier, Book II, Prelude in D ("C 12/8" for simple vs. compound
		equivalents)
	Brahms: Piano Trio, Op. 101, III ("3/4 2/4", meaning each measure is one or the other; later,
		"9/8 6/8", with the same meaning)
	Debussy: Preludes, Book 1: Les collines d'Anacapri (State Music Pub. House/Sorokin ed., Dover
		reprint) ("12/16 = 2/4" for simple vs. compound equivalents)
	Rimsky-Korsakov: Scheherazade, Op. 35 (Belaieff/Dover ed.), IV, m. 30ff. ("2/8 (6/16 3/8)")
	Ysaye: Solo Vn Sonata, Op. 27 No. 2 (Ysaye/Schirmer ed.), III ("3/4 = 5/4": the vast majority
		of measures are in 3/4, but a few are in 5/4, one in 4/4, and one, marked "-2-", in 2/4)
	Ysaye: Solo Vn Sonata, Op. 27 No. 2 (Ysaye/Schirmer ed.), IV ("2/4 3/4": each measures is one
		or the other)

One notehead for notes of different duration ending at the same time, and therefore beginning
at different times. This is the principal "impossible rhythm" situation of Hook (2008), which
gives dozens of examples besides those listed here:
	Brahms: Variations on an Original Theme, Op. 21 no. 1 (Br+H ed.), Variation 5 (one
		notehead for normal 16th and triplet 16th => 1/2 = 2/3; occurs many times) [contrib. by
		Hook]
	Brahms: Intermezzo, Op. 119 no. 1 (1893; International ed.), 12 m. before the end (one
		notehead for normal and triplet 8ths ending at the same time => 1/2 = 2/3)
	Chopin: Ballade in f, Op. 52 (Br+H ed.), mm.?? (one notehead for normal and triplet
		16ths ending at the same time => 1/2 = 2/3; occurs several times)
	Chopin: Concerto in F minor, Op. 21 (Br+H ed.), III, mm. 335-36 (one notehead for normal and
		triplet 8ths ending at the same time => 1/2 = 2/3) [contrib. by Hook]
	Chopin: Mazurka in A minor, Op. 17 no. 4.
	Chopin: Prelude in C, Op. 28 no. 1 (1836?; Paderewski ed.) (one notehead for normal and
		triplet 16ths ending at the same time; occurs >20 times) [contrib. by Hook]
	Chopin: Prelude in C, Op. 28 no. 1 (1836?; Paderewski ed.) (one notehead for normal and
		quintuplet 16ths ending at the same time; occurs 6 times) [contrib. by Hook]
	Chopin: Sonata no. 1 (1828?; Schirmer-Mikuli ed.), III (one notehead for normal and
		quintuplet 16ths ending at the same time; occurs 3 times)
	Ravel: Sonatine (1903-05; Durand/Dover ed.), III (one notehead for normal and triplet
		8ths ending at the same time; occurs 4 times)
	Schumann: Bunte Blatter, Op. 99 no. 2 ("StŸcklein II") (one notehead for normal 32nd and
		triplet 8th => 1/3 = 3/8 & 2/3 = 5/8; occurs 4 times) [contrib. by Hook]
	Scriabin: Prelude in C, Op. 11 no. 1 (Izdatel'stvo Muzyka (State Music Publishing House) ed.)
		(various conflicts??) [contrib. by Hook]
	Scriabin: Sonata no. 7 (zdatel'stvo Muzyka (State Music Publishing House)/Dover ed.), p. 148
		(one notehead for normal 8th and triplet 8th ending at the same time)

Half notehead with beam(s):
	Brahms: Rhapsody in G minor, Op. 79 no. 1 (Peters/Sauer, International eds.) (dotted-half
		head; occurs many times)
	Chopin: Prelude in Db, Op. 28 no. 15 (Paderewski, Universal, Br+H eds.) (half head and
		dotted-half head in beamed group of 8th notes; each occurs several times, sometimes
		in the middle of the group)
	Debussy: Arabesque no. 1 (Durand ed.) (double-stemmed half head in beamed group of 8th
		notes; occurs many times)
 	FaurŽ: Dolly Suite, Op. 56 (Dover reprint of Hamelle et Cie ed.), Berceuse, Seconda part
		(half head beamed to 8th; occurs many times)

Non-aligned barlines (these seem to be less common than one would expect; but they're surely
		more common than these few examples suggest, even up to 1935!) (B&I 7.5):
	Bartok: String Quartet #2 (Boosey & Hawkes ed.), I, rehearsal mark 8 (polymeter: 6/8 vs.
	(3+4)/8, 9/8, etc. with 8th = 8th)
	Chopin: "Minute" Waltz, Op. 64 no. 1 (Paderewski ed.), last 3 measures (barlines omitted on
		one staff)
	Chopin: Ballade no. 1 in g, Op. 23 (Br+H ed.), last page (barlines omitted on one staff)
	Ives: The Unanswered Question (1908; Southern Music)
	Ives: Three Places in New England (1903-14; Mercury ed.), II. Putnam's Camp (polymeter)
	Ives: Symphony no. 4, I, p. 3 (1910-16) (polymeter)
	Mozart: Don Giovanni (1787; all eds.), Act I Finale (no. 13; ballroom scene) (polymeter:
		3/8, 2/4, 3/4. 2/4 quarter = 3/4 quarter; 3/8 dotted quarter = 2/4 or 3/4 quarter)
	*Wagner: Gotterdammerung (Eulenberg), end of Act III, pp. 1337-57 (3 mm. of 6/8 vs. one
		of 3/2; 2 mm. of 6/8 vs. one of 2/2)

Multibar rest not in a part of an ensemble piece:
	Beethoven: Piano Sonata no. 31, Op. 110, II (in music for a solo instrument)
	Kodaly: Hary Janos Suite (Universal ed.), I, m. 75 (in the score of an ensemble piece)
	Ravel: Gaspard de la Nuit (Durand ed.), Scarbo, mm. 30-31 (in music for a solo instrument)

Other:
	Chopin: Nocturne, Op. 15 no. 2, m.8 (ordinary notehead with one stem and beam to an
		ordinary note, and one stem and beam to grace -- not just small -- notes)
	Tchaikovsky: Piano Concerto no. 1 (Billaudot), I, p. 25 (measure of two duplet quarters
		followed by three triplet quarters in C time)

	Chopin: Nocturne, Op. 27 no. 2 (6:4 groupets in 6/8 meter) [??IS THIS INTERESTING ENOUGH
		TO BE WORTH MENTIONING?]
	Chopin: Prelude in Db, Op. 28 no. 15  (Paderewski, Universal, Br+H eds.) (7 8ths in the time of 2)
	
	F. Couperin: Passacaille from Pieces de Clavecin, Ordre VIII (pub. 1717) (numerous groups of
		three 128ths that should be triplet 32nds, and of two 64ths that should be 32nds)

	Bach: Brandenburg Concerto no. 4, III, solo violin ("tuplets" that are unambiguous but
		seem pointless because they're just ordinary notes: 8 16th notes in the time of 8, and
		16 16th notes in the time of 16)

	Bach: Jesu, Joy of Man's Desiring, arr. for piano by Myra Hess (Oxford) (single notes --
		not part of a chord -- on "wrong" side of stem, to show three voices on one staff)

	Elgar: Enigma Variations, no. 7 (Eulenberg ed.): time signature of "1", i.e., no denominator
		(NB: fairly common in early music, even Bach, but extremely rare since) (B&I 10.2)

	Debussy: Jardins sous la pluie from Estampes (Durand, 1903) (series of nine small-note 32nds
		marked "9": judging from the rhythmic context, apparently grace notes) (B&I 11.14)

	Hummel: Prelude in B major, Op. 67 no. 1 (Universal/Dover ed.) (tuplet of 8 16th notes in an
		amount of time that's part of a cadenza-like passage and impossible to define)
		
	Rachmaninoff: Prelude, Op. 32 no. 3 (Muzgiz ed.), mm. 23 & 24 (series of five small-note eighths
		marked "5": judging from the rhythmic context, apparently grace notes) (B&I 11.14)
	
	Schumann: Carnaval, Op. 9 (Kalmus/Clara Schumann ed. & an an unidentified edition on the Web,
		http://imslp.org/wiki/File:Schumann_-_Carnaval,_Op_9.pdf), no. 6 (Florestan), last 4 mm.
		(change of meter without notice: the movement has a time signature of 3/4, and it really
		is in 3/4 until the last 4 measures, each of which has a duration of 2/4)

	Schumann: Carnaval, Op. 9 (Dover ed.), no. 1, mm ??, right hand: "hugely ambiguous" double-
		stemmed double-dotted quarters [contrib. by Cuthbert]


(5) Miscellaneous.

Simultaneous notes in two clefs on one staff (B&I 8.4)**:
	Brahms: Piano Sonata, Op. 5 (Br+H ed.), I [contrib. by Auer]
	Debussy: Preludes, Book 1: La Cathedrale Engloutie (Durand ed., 1910); occurs 3 times
	Debussy: Preludes, Book 1: Voiles (State Music Pub. House/Sorokin ed., Dover reprint);
		occurs 3 times (with clef in mid-air in front of note on ledger lines)
	*Dvorak: Humoresque in F Major, Op. 101 no. 4 (Simrock ed., Dover reprint), near end
		[contrib. by Hook]
	Poulenc: Concert Champetre (orch. reduction, Editions Salabert, 1929), I, p.24 (in an
		extended passage)
	Puccini: Turandot (piano/vocal score, Ricordi), pp. 374, 375, 376, & 377
	Rachmaninoff: Prelude, Op. 23 no. 1, 2, 3, 7, 8 (International) (overlapping notes in two
		clefs on one staff)
	Rachmaninoff: Prelude, Op. 23 no. 3 (International ed.)
	Ravel: Gaspard de la Nuit (Durand ed.), Scarbo, several places (note(s) on downbeat in
		one clef, clef change, then note(s) that must also be on the downbeat)
	Szymanowski: Piesni Muezina Szalonego, Op. 42 (1918) (ex. in Hewlett & Selfridge-Field,
		1994), no. 4 (with clef in mid-air in front of notes on ledger lines)

One clef for two staves:
	Pozzoli: [solfeggio book; but NB probably published after 1935, and arguably not CMN]

Movement starting/ending with whole measures of rests:
	*Ligeti: Lux aeterna (movement ending with 7 measures of rest) (NB: after 1935) [contrib. by Hook]
	Liszt: Mephisto Waltz no. 1 (movement starting with a measure of rest) [contrib. by Auer]
	Messiaen: Oiseaux Exotiques, last movement (NB: after 1935) (movement ending with a measure of rest)
	Mozart: Piano Sonata in G, K. 283, last movement (movement ending with a measure of rest)

Non-numeric measure numbers (B&I 7.12) or page numbers:
	Schubert: Impromptu, Op. 142 #1 (non-numeric measure numbers. The last measure before the two
		one-measure endings of a repeated section is 81; in one edition, the 1st ending is
		labelled "81a", and in another, the 2nd ending is labelled "82b"; in both, the measure
		after the endings is 83.)
	R. Strauss: Ariadne auf Naxos (Fuerstner/Dover ed., 1916), pp. 88a, 88b, 88c (non-numeric
		page numbers. The next page, numbered 89, starts a new scene)
	Puccini: La fanciulla del West, vocal score (Well-Tempered Press), pp. 190a-190b
		(non-numeric page numbers)

Non-standard key signatures (B&I 9.1):
	Bach: Well-Tempered Clavier, Book I, Prelude in G (sharps or flats not in their usual octaves)
	Bartok: Mikrokosmos, nos. 76, 79, 82, 93 (sharps or flats not in their usual octaves)
	Bartok: Mikrokosmos, no. 99 (non-standard key signatures: unusual combinations of sharps
		or flats)
	
Tied notes with spelling change (B&I 17.1):
	Bartok: String Quartet #2 (Boosey & Hawkes ed.), I, mm. 3-4, violin 1 (B-flat tied to A-sharp)
		(in B & M, 1948).
	Beethoven: Piano Sonata in e (Dover/Schenker, *Henle, Ricordi/Casella eds.), Op. 90, II,
		m. 216 (tied notes in dyad with spelling change on each) [contrib. by Teodoru]. NB:
		in the Casella edition, this occurs a beat later than in the Schenker & Henle,
		probably to avoid a diminished 2nd in another voice. But how did Beethoven write it?
	Chopin: Sonata no. 3, Op. 58 (Mikuli, Paderewski eds.), mm. 95ff [contrib. by Hook]
	Chopin: Scherzo no. 4 in E, Op. 54 (Br+H ed.), m. ??  (chord of D#, Fx, C#, D# tied across key
		signature change to Eb, G, Db, Eb) [contrib. by Bode]
	FaurŽ: Dolly Suite, Op. 56 (Dover reprint of Hamelle et Cie ed.), III (Le jardin de Dolly),
		Seconda, mm. 14-15 (C-flat tied across barline to B)
	FaurŽ: song cycle "La Chanson d'Eve" (Heugel & Co. ed., Paris, 1907), Song 1, mm. 94-95
		(C-flat tied to B-natural, in piano RH) [contrib. by Hook]
	FaurŽ: " " , Song 10, m. 15 (C-flat tied to B-natural, in piano RH) [contrib. by Hook]
	*Franck: Piano Quintet in F Minor (Peters ed.), I, about midway between rehearsal letters K
		& L, piano (the left hand has octave D-sharp tied across a barline to octave E-flat. (At
		the same time, the cello has E-flat tied to E-flat.)) [contrib. by Hook]
	Ravel: String Quartet (International ed.), III, rehearsal mark K, viola (Gb tied across
		barline to F#)
	Ravel: Gaspard de la Nuit (Durand/Dover ed.), II (Le Gibet), mm. 27-31  (a series of A-sharp
		octaves is followed by one of B-flat octaves, then back to A-sharps, then to B-flats; the
		last of the 1st three series is tied to the first of the next series)
	Strauss: Also Sprach Zarathustra, in the fugue section titled "Von der Wissenschaft" (occurs
		at least four times at different pitch levels) [contrib. by Hook]

Multiply-augmented or -diminished melodic intervals:
	Brahms: Clarinet Sonata in E-flat, Op. 120, No. 2 (Wiener Urtext ed.), m. 97: doubly augmented
		unison (bass line moves directly from F-sharp to F-flat) [contrib. by Hook]
	FaurŽ: song cycle "La Chanson d'Eve" (Heugel & Co. ed., Paris, 1907), Song 1, mm. ??:
		doubly diminished third (Cx to Eb) in LH in second system [contrib. by Hook]
	" Song 8, mm. 15-16: doubly augmented unison (G# to Gb) in first measure, RH [contrib. by Hook]

Other:	
	Chopin: Nocturne, Op. 15 no. 1 (Durand ed./Debussy), near end (grace note on grace note) (B&I 5.36)
	Mendelssohn: Spring Song, no. 30 of Songs without Words (?? ed.), m. ?? (grace note on grace note)
			(B&I 5.36)
	Tchaikovsky: Piano Concerto no. 1 (Eulenberg, Billaudot eds.; Schirmer/Joseffy 2-piano
		reduction), I, m. 6 - at least 14 (simultaneous 8va and non-8va notes on one staff)
	Ravel: Gaspard de la Nuit (Durand ed.), Scarbo, last page (one 8va sign for both staves)
	Haydn: "Farewell" Symphony, IV, Coda (heavy double bars in some staves, single bars in others)

	Strauss: Also Sprach Zarathustra (Eulenberg ed.) (system spanning two pages, sideways)
	Wagner: Die Meistersinger (old Schott miniature score) (system spanning two pages, sideways)
	
	Nancarrow: Study no. 35 for Player Piano (metronome marks qtr = 283-1/3, 141-2/3, etc.)
		[NB: this is relatively recent music, and probably not from a respected publisher!]
	Schumann: "Susser Freund, du blickest" in Frauenliebe und Leben, Op. 42 (grace chord with
		arpeggio sign) (B&I 5.28)
	Ives: from "Lincoln, the Great Commoner", no. 11 in 114 Songs (grace-note beam whose last
		note is a normal note in the middle of a beamed group)
	Tchaikovsky: Symphony no. 2 (1873; Eulenberg ed.), I - II, timpani (invisible key signature,
		i.e., flats indicated by an accord only (in IV and perhaps III, accidentals appear on
		flatted notes); this is common in classical-period music, but not Tchaikovsky! B&I 3.1)

	
** My dissertation refers to "two clefs simultaneously active on one staff" instead of
"simultaneous notes in two clefs on one staff", but the former concept also includes the
much more common and _usually_ less interesting case of a long note written in one clef
continuing to sound as shorter notes, written on the same staff in a different clef, begin.
If a 2/4 measure on one staff begins in bass clef, with a half note in one voice and a
quarter rest in another, then changes to treble clef for some notes in the second voice,
that's not a big deal. But if the half note is replaced with two tied quarters, and the
second quarter appears in the same horizontal position as the first, it's much harder to
explain with conventional rules.

On the other hand, the "clef in mid-air" of La Danse de Puck and Voiles really _is_ "two clefs
simultaneously active" and not "simultaneous notes in two clefs"! It's interesting to
compare this bit of notation with a device that is not too unusual in cello music. E.g., in
the Kodaly Sonata for Solo Cello, Op. 8, there are several instances of a low note
appearing, preceded by a bass clef, on a very short staff segment below the (main) staff.
[contrib. by Loewenheim] This device is far easier to explain in terms of conventional
notation, but it does not save as much vertical space.


REFERENCES

Barlow, Harold & Morgenstern, Sam (1948). A Dictionary of Musical Themes. New York:
Crown Publishers.

Byrd, Donald (1984). Music Notation by Computer (doctoral dissertation, Computer Science
Dept., Indiana University). Ann Arbor, Michigan: UMI ProQuest (order no. 8506091); available
(in scanned form) at http://www.informatics.indiana.edu/donbyrd/DonDissPageImages.pdf .

Byrd, Donald (1994). Music-Notation Software and Intelligence. Computer Music Journal 18,
no. 1, pp. 17-20.

Byrd, Donald (2010). The Myth of Easy Time Signature Checking. Draft available at
http://www.informatics.indiana.edu/donbyrd/Papers/CheckMeasDurVsTimeSigNotEasy.doc .

Byrd, Donald (2009). Extremes of Conventional Music Notation. Retrieved July 20, 2009,
from the World Wide Web: http://www.informatics.indiana.edu/donbyrd/CMNExtremes.htm .

Byrd, Donald, & Isaacson, Eric (2009). A Music Representation Requirement Specification for
Academia. Computer Music Journal 27, no. 4 (2003), pp. 43-57; revised version retrieved June
20, 2009, from the World Wide Web: http://variations2.indiana.edu/system_design.html .

Hewlett, W., & Selfridge-Field, E. (Eds.) (1994). Music Notation Software. In Computing in
Musicology, vol. 9, pp. 167-230. 

Hook, Julian (2008). How to Perform Impossible Rhythms. Talk at Society for Music Theory
conference, Nashville, Tennesee, November 2008.

Rastall, Richard (1982). The Notation of Western Music. New York: St. Martin's Press.


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