The documentation about beams (http://lilypond.org/doc/v2.19/Documentation/notation/beams) suggests that you can enabel and disable automatic beaming in the measure. In the following example I expected the last three notes to have the stem up like in a voiceOne context:
\version "2.18.0"
\relative c'' {
\time 3/4 \key es \major
%% need stem up
as8\> c f
%% neeed stem down
as c f\! |
}
So I placed the corresponding voice commands and added \autoBeamOff to interrupt the beaming for two notes:
\relative c'' {
\time 3/4 \key es \major
\voiceTwo as8\> c \autoBeamOff f
\voiceOne as \autoBeamOn c f\! |
}
But the result isn't convincing. The beam is added for f and as altough it should be possible inside the measure. Finally I managed the score with disabling the automatic beaming for the whole measure. But why is this necessary? Is the doc not exact?