Re: How to cancel voice so ties are right direction

[Jeff Barnes]

Thanks for the replies, everyone. 
David Kastrup wrote:

> \relative c' takes a music expression as an argument, and in this case,
> the argument is the parallel music << ... >>.


Interesting. Does \voiceXXX take a music expression too? If so, can I set the 
bounds of the expression with {}? 

> I don't see that you have a "wrong" tie direction.  Take all the
> parallel music out, and LilyPond will choose the same tie.  If you want
> to flip it up explicitly, probably the easiest way is writing ^~ instead
> of ~.

I've found a general need to add \xxxNeutral after using \voices to get stems, 
ties, tuplets, etc to line up "correctly"  
(http://lilypond.org/doc/v2.14/Documentation/learning/within_002dstaff-objects).
 It's not clear to me what the bounds of \voiceXXX are. 

If expression boundaries impact the state of the parser, it seems Lily is 
adding a burden to the user by forcing the user to manage expression boundaries 
without a consistent way to define the boundaries. At least, that's the 
objection that's inside my noob head, anyway. Also, trying to fix the tie 
problem sent me through the path of adding all sorts of things to the music 
that made reading it more difficult.

I looked at the grammar at 
http://lilypond.org/doc/v2.14/Documentation/notation/lilypond-grammar. Where is 
\voiceXXX defined?

Jeff