I think you just have to remember to use \oneVoice or \stemNeutral when the 2nd voice isn't playing.
If the 2nd voice is coming and going frequently, you are much better off using << { \voiceOne Music goes here } \new Voice { { \voiceTwo Music goes here } } >> \oneVoice This way, when the voices split in two, the first voice can continue using a slur it had begun before the voices split. If you use << { } \\ {} >> to split the voices, you'll get "Cannot terminate slur" errors, and then you have to start the second voice before you really want to, fill it with spacer rests and manually change the stemming -- no fun. There is a really nice post on the Scores of Beauty blog about temporary polyphonic sections by Urs Liska: http://lilypondblog.org/2013/07/voice-contexts-in-temporary-polyphonic-sections/ -- View this message in context: http://lilypond.1069038.n5.nabble.com/Experiences-from-voice-handling-wanted-tp157895p158088.html Sent from the User mailing list archive at Nabble.com. _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user