+
+ (TimeScaledMusic
+ . ((description . "Multiply durations, as in tuplets.
+
+Syntax: @code{\\times @var{fraction} @var{music}}, e.g.
+@code{\\times 2/3 @{ @dots{} @}} for triplets.")
+ (length-callback . ,ly:music-wrapper::length-callback)
+ (start-callback . ,ly:music-wrapper::start-callback)
+ (iterator-ctor . ,ly:time-scaled-music-iterator::constructor)
+ (types . (time-scaled-music music-wrapper-music general-music))
+ ))
+
+ (TransposedMusic
+ . ((description . "Music that has been transposed.")
+ (iterator-ctor . ,ly:music-wrapper-iterator::constructor)
+ (start-callback . ,ly:music-wrapper::start-callback)
+ (length-callback . ,ly:music-wrapper::length-callback)
+ (to-relative-callback .
+ ,ly:relative-octave-music::no-relative-callback)
+ (types . (music-wrapper-music general-music transposed-music))
+ ))
+