(let* ((m (make-music 'AutoChangeMusic))
(m1 (make-non-relative-music (context-spec-music music 'Voice "one")))
(context-list (recording-group-emulate music
(let* ((m (make-music 'AutoChangeMusic))
(m1 (make-non-relative-music (context-spec-music music 'Voice "one")))
(context-list (recording-group-emulate music