(start-callback . ,ly:repeated-music::first-start)
(length-callback . ,ly:repeated-music::volta-music-length)
(types . (general-music repeated-music volta-repeated-music))
(start-callback . ,ly:repeated-music::first-start)
(length-callback . ,ly:repeated-music::volta-music-length)
(types . (general-music repeated-music volta-repeated-music))