;; simple_element : note | figure | rest | mmrest | lyric_element | skip
(let* ((simple-element (car simple-elements))
(duration (ly:music-property simple-element 'duration))
;; simple_element : note | figure | rest | mmrest | lyric_element | skip
(let* ((simple-element (car simple-elements))
(duration (ly:music-property simple-element 'duration))