While developing a Playback View in Denemo (music plays back while LilyPond-typeset SVG is animated, building on Mathieu Demange's work) I came across a bug in event-listener.ly:
In this procedure #(define (format-tempo engraver event) (print-line engraver "tempo" ; get length of quarter notes, in seconds (/ (ly:event-property event 'metronome-count) (format-moment (ly:duration-length (ly:event-property event 'tempo-unit)))))) The division should be a multiplication, otherwise \tempo Presto 4=480 and \tempo Presto 2=240 result in different tempi being written out. Richard _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-devel