slap = #(define-music-function (music) (ly:music?) #{ \temporary \override NoteHead.stencil = #ly:text-interface::print \temporary \override NoteHead.text = \markup \translate … …0 -0.8)))) #music \revert NoteHead.stencil \revert NoteHead.text \revert NoteHead.stem-attachment #}) \relative c' { c4 \slap c d …