I hope I’m wrong but I don’t think event-list-to-midi-file
let’s you use chords.
I can’t get the following to run:
(let ((events (list (make-event 'a4'e :start-time 0) (make-event '(a4 b4 c5) 'e :start-time 0.1)))) (event-list-to-midi-file events :start-tempo 120 :auto-open nil))