I guess you could wrap the tied notes into a polyphonic structure (where the 
additional voice has only hidden notes) and then specify the exact location of 
the upbow, like so:

Instead of eg
c''2. ~ c2. 

use

<<
  { c''2. ~ c''2. }
  \new Voice { \hide c''2.\downbow \hide c''2.\upbow }
>>

Adjust the spacers to whatever you desire. 
And sorry, I can't test this right now, but it should work. 

Best, Robert 

______

Truth does not change according to our ability to stomach it.
-- Flannery O'Connor

> On 27 Aug 2015, at 09:53, B~M <viola1...@gmail.com> wrote:
> 
> Dear ALL, I have a long trill in a little viola piece by Milhaud which Ive 
> attached. 
> The trill continues over two full bars, 27 and 28. 
> What I would like to do is add in a change go bow, (an up bow)  but half way 
> through the trill
> in 28. Is it somehow possible to do this by specifying the bow direction with 
> X Y coordinates etc ? 
> 
> Paul 
> <MilhaudCalifornienne-JM.pdf>
> _______________________________________________
> lilypond-user mailing list
> lilypond-user@gnu.org
> https://lists.gnu.org/mailman/listinfo/lilypond-user
_______________________________________________
lilypond-user mailing list
lilypond-user@gnu.org
https://lists.gnu.org/mailman/listinfo/lilypond-user

Reply via email to