Voices can switch automatically between the top and the bottom staff. The syntax for this is
\autochange \context Voice { ...music... }
The two staves of the piano staff must be named up
and
down
.
A \relative
section that is outside of \autochange
has
no effect on the pitches of music, so, if necessary, put
\relative
inside \autochange
like
\autochange \relative ... \new Voice ...
The autochanger switches on basis of pitch (middle C is the turning point), and it looks ahead skipping over rests to switch in advance. Here is a practical example
\score { \notes \context PianoStaff << \context Staff = "up" { \autochange \new Voice \relative c' { g4 a b c d r4 a g } } \context Staff = "down" { \clef bass s1*2 } >> }
In this example, spacer rests are used to prevent the bottom staff from terminating too soon.
In this manual: Manual staff switches.
Program reference: AutoChangeMusic.
The staff switches often do not end up in optimal places. For high quality output, staff switches should be specified manually.
\autochange
cannot be inside \times
.
Internally, the \partcombine
interprets both arguments as
Voice
s named one
and two
, and then decides when
the parts can be combined. Consequently, if the arguments switch to
differently named Voice contexts, the events in those
will be ignored.
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This page is for LilyPond-2.2.6 (stable-branch). |