[MEI-L] Slurs/ties across repetitions and/or endings

[Andrew Hankinson]

Hi Werner,

I would use the @startid and @endid attributes on the <tie> (or <slur>) elements:

<tie startid="#note-id1" endid="#note-id2" />

This would mean that you would need to assign xml:ids to the note elements:

<note xml:id="note-id1" ... />

<note xml:id="note-id2" ... />

-Andrew

> On 5 Feb 2019, at 17:10, Werner Goebl <goebl at mdw.ac.at> wrote:
> 
> Dear list,
> 
> How would you encode a slur or tie that spans across a repetition sign and an ending block or across two ending blocks?
> 
> Please see attached an excerpt from Beethoven Op. 57, 2nd movement.
> 
> 1) There is a tie in the bass (bars 1--2) across a repeat start. The same tie is drawn in bar 9  with a repetition bar line in the first ending (prima volta) that leads back to bar 2.
> 
> You could encode the ties as note attributes with multiple tie="i" or tie="t".
> 
> The first example in bar 1--2/9--2 would be like this:
> 
> <measure n="1">
> 	...
> 	<note dur="8" oct="1" pname="g" accid.ges="f" tie="i" />
> 	...
> </measure>
> <measure n="2" left="rptstart">
> 	...
> 	<note dur="8" oct="1" pname="g" accid.ges="f" tie="t" />
> 	...
> </measure>
> ...
> <ending n="1">
> 	...
> 	<measure n="9" right="rptend">
> 		...
> 		<note dur="8" oct="1" pname="g" accid.ges="f" tie="i" />
> 		...	
> 	</measure>
> </ending>
> 
> 2) Another version of this problem is the tie from bar 7--8 into ending 1 and into ending 2. (A second such example occurs in the 3rd staff group.)
> 
> <measure n="7">
> 	...
> 	<note dur="8" oct="1" pname="a" accid.ges="f" tie="i" />
> 	...
> </measure>
> <ending n="1">
> 	<measure n="8">
> 		...
> 		<note dur="8" oct="1" pname="a" accid.ges="f" tie="t" />
> 		...
> 	</measure>
> 	...
> </ending>
> <ending n="2">
> 	<measure n="8">
> 		...
> 		<note dur="8" oct="1" pname="a" accid.ges="f" tie="t" />
> 		...	
> 	</measure>
> 	...
> </ending>
> 
> In both approaches, Verovio only renders the tie in the first ending, but not in the second.
> 
> Is there a better way to encode such overlapping slurs/ties, in a way that Verovio actually renders? Would a modified tie element help that allows for multiple endids in such cases? Or is there another correct way of encoding this?
> 
> All the best,
> Werner & David
> 
> 
> -- 
> Dr. Werner Goebl
> Associate Professor
> Department of Music Acoustics – Wiener Klangstil
> University of Music and Performing Arts Vienna
> Anton-von-Webern-Platz 1
> 1030 Vienna, Austria
> Tel. +43 1 71155 4311
> Fax. +43 1 71155 4399
> http://iwk.mdw.ac.at/goebl
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