2.3.1 Music function definitions

The general form for defining music functions is:

function =
#(define-music-function
     (arg1 arg2 …)
     (type1? type2? …)
   body)

quite in analogy to Scheme function definitions. More often than not, body will be a LilyPond code block.

For a list of available type predicates, see Predefined type predicates.

See also

Notation Reference: Predefined type predicates.

Installed Files: lily/music-scheme.cc, scm/c++.scm, scm/lily.scm.

Extending LilyPond v2.25.17 (development-branch).