I really appreciate the answers from Graham Percival. Thank you very much :)
One more question, How to sudenly, (not of a regular voice), add a melody on a regular melody? For example, a measure goes like in --- global = \notes { \key ef \major \time 6/8 } upper = \context Staff \notes\relative c { d4. d4 e8 % at this very measure, I'd like to add a b2. % a 2 beats of b } lower = \context Staff \notes\relative c { } \score { \context GrandStaff < \context Staff = upper < \global \upper > \context Staff = lower < \global \clef "bass" \lower > > } --- thank you very much neuro http://neuro.ohbi.net [EMAIL PROTECTED] [EMAIL PROTECTED] _______________________________________________ Lilypond-user mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/lilypond-user