I understand the \parenthesize command applies to a single note. I would like the parentheses to wrap more tan just one note. Something like \parenthesize {c4 d e f} to have a parentheses right before c and after f. This would be useful writing a jazz score to include an optional anacrouse in the last measure.
I would also be interested in doing the same thing with the chords written above the staff. Any ideas, anyone? Thanks