Am 09.08.23 um 03:12 schrieb William Rehwinkel via LilyPond user discussion:
\version "2.25.7"
\new PianoStaff <<
\new Staff = "up" \relative g' { \voiceTwo g16 e c \change Staff =
"do" \voiceOne g e g \change Staff = "up" \voiceTwo c e}
\new Staff = "do" \with {\clef bass } s2
>>
This combination (\change Staff = ... \voiceXX) is so common that I tend
to abbreviate it:
\version "2.25.7"
up = { \change Staff = up \voiceTwo }
down = { \change Staff = down \voiceOne }
\new PianoStaff <<
\new Staff = up <<
\new Voice {
\voiceOne
e''4 c'' c''2
d''4 b'2 c''4
}
\new Voice \relative {
\voiceTwo
g'8 e c \down g e g \up c e
f e f d e c g g'
}
>>
\new Staff = down \with { \clef bass } {
\voiceTwo c4 c c c
\oneVoice c c c c
}
>>
Lukas