I have a score with lyrics that have slightly different rhythms for each
verse. The way it's set in the original is to have full-size stem-up notes
for the first verse, and small stem-down notes for the alternative. So far,
so good - 2 voices, set voiceOne/voiceTwo, use \teeny to get small notes.
The problem is that some of the notes have accidentals. With the \teeny,
the accidentals are smaller and therefore don't overlap completely, and you
get a sort-of shadow effect. I don't want to even try replacing the
accidental with an in-key note, since this would then play wrong. It looks
to me like the accidental engraver is in the staff context. Is there any
way to remove the staff engraver for just one voice of a staff?