+relative =
+#(define-music-function (parser location pitch music)
+ ((ly:pitch? (ly:make-pitch 0 0 0)) ly:music?)
+ (_i "Make @var{music} relative to @var{pitch} (default @code{c'}).")
+ (ly:make-music-relative! music pitch)
+ (make-music 'RelativeOctaveMusic
+ 'element music))
+