Changing the breath mark symbol

The glyph of the breath mark can be tuned by overriding the text property of the BreathingSign layout object with any markup text.

\relative c'' {
  c2
  \override BreathingSign.text =
    \markup { \musicglyph "scripts.rvarcomma" }
  \breathe
  d2
}

[image of music]

LilyPond snippets v2.25.15 (development-branch).