I hesitate to admit this, but when I noticed that explicit line-breaks before grace notes were failing with "should you be using bar checks?", I searched the mailing list archives more thoroughly than I searched the manual. The archives had nothing helpful, so I made up a solution . . . which seemed somehow familiar.
The friendly advice about grace notes and bar lines, applies to line breaks as well : Notation Reference 1.2.6 Special rhythmic concerns - Grace notes, Acciaccatura, Appoggiatura "Staff notation . . . are also synchronized [to grace notes]. Take care when you mix staves with grace notes and staves without . . . This can be remedied by inserting grace skips of the corresponding durations in the other staves. " Either put the \break s in the staff with the grace notes, or put a synchronizing spacer grace in the voice with the \break s. \relative c''{ << \new Staff { e1 \grace c16 d1 } \new Staff { s1 \break \grace s16 s1 } } _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user