Re: how to place fermata over \breathe?

[Noeck]

Or, just as a slight variation: if you want to minimize the code needed
within the music, you can put the override in the command:

breatheFermata = {
  \once \override BreathingSign.text = \markup {
    \combine
    \musicglyph #"scripts.rcomma"
    \raise #1
    \musicglyph #"scripts.ufermata"
  }
  \breathe
}
\relative c' {
  c c \breatheFermata
  c c
}

Cheers,
Joram