Re: "Rest" invisible after part combine

[Keith OHara]

Pierre Perol-Schneider <pierre.schneider.paris <at> gmail.com> writes:
> 
> As far as I remember it was a well known issue. I thougt it was over but I 
have to admit that I barely use partcombine.
> 
> For more details, see : https://code.google.com/p/lilypond/issues/detail?
id=261
> 

When using partcombine to build an instrumental score, during the time when
one instrument is playing solo, we usually want to leave out the rests for
the other instrument.  The usual "Solo" or "a2" mark makes it clear whether
the notes are unison or solo.

For this case with all the short rests, it seems you would like an option
to \partcombine that sets only in chords or as separate voices, never using
the "solo" settings.  LilyPond doesn't have exactly that yet.

Also the \aikenHeads shortcut only affects one voice, so you probably want
instead 
  \set Staff.shapeNoteStyles = ##(do re miMirror fa sol la ti)
just once in each Staff where you want that style.