\test "" ##[ \repeat percent 2 { c d } #] % PercentRepeatedMusic
\test "" ##[ \repeat tremolo 4 { c16 d } #] % TremoloRepeatedMusic
\test "" ##[ \repeat volta 2 { c4 d } \alternative { { c d } { e f } } #] %
\test "" ##[ \repeat percent 2 { c d } #] % PercentRepeatedMusic
\test "" ##[ \repeat tremolo 4 { c16 d } #] % TremoloRepeatedMusic
\test "" ##[ \repeat volta 2 { c4 d } \alternative { { c d } { e f } } #] %