Creating metronome marks in markup mode

New metronome marks can be created in markup mode, but they will not change the tempo in MIDI output.

\relative c' {
  \tempo \markup {
    \concat {
      (
      \smaller \general-align #Y #DOWN \note {16.} #1
      " = "
      \smaller \general-align #Y #DOWN \note {8} #1
      )
    }
  }
  c1
  c4 c' c,2
}

[image of music]

LilyPond snippets v2.25.17 (development-branch).