I have a couple of songs in my latest theatre project. It would be
nice
to have something like "duration: 3'22''" at the end of each song.
Doing this by hand is straightforward:I generate a midi file that
sounds
accurate and let it play by timidity – but IMHO it would be less
tedious
and less error-prone if lilypond were capable of doing these
calculations itself.
Tempo indications and meter changes have to be taken into account, so
this is probably doable with a special engraver only IIUC.
Has someone else already done something like this? I have no
experience
in writing scheme engravers, so any hint would be highly appreciated.