Gould says all grace note have stems up, except (1) when there are two parts on a staff, (2) in a double stemmed group, (3) when the group is on the beat, sharing a note head with a main note whose stem is up.
Paul From: Jean Abou Samra <[email protected]> To: Knute Snortum <[email protected]>, <[email protected]> Sent: 11/06/2022 23:58 Subject: Re: Stem direction of grace notes when main note is stemDown Le 12/06/2022 à 00:52, Knute Snortum a écrit : > I'm confused, which often means I'm missing something, so bear with me. > > I have always thought that a grace note's stem is up no matter what. > But LilyPond's default is to engrave a grace note's stem down if the > main note's stem is down: > > { \voiceTwo c'4 c' c' \acciaccatura d'8 c'4 } > > ...which forces one to do something like this: > > { \voiceTwo c'4 c' c' \acciaccatura { \stemUp d'8 } \stemDown c'4 } > > Even then, the slur goes from the head of the grace note to the tip of > the stem in the main note, when I think it looks better when the slur > goes head to head. > > LilyPond has engraved grace notes down stem when the main note is down > stem since at least 2.18.2, but this seems wrong. Shouldn't the > default be always stem up? What would you then do with << { g'4 g' g' \acciaccatura a'8 g'4 } \\ { c'4 c' c' \acciaccatura d'8 c'4 } >> ? I don't have Gould at hand right now, but my clue is that the rule reads: in single-stemmed writing, grace notes are always up, even if their natural direction would be down, as in { c''4 c'' c'' \acciaccatura d''8 c''4 } In double-stemmed writing, however, I don't believe it's standard to do that. Best, Jean
