$ apt rdepends libportmidi0
libportmidi0
Reverse Depends:
  Depends: libportmidi-dev (= 1:217-6.1+b4)
  Depends: musescore-snapshot
  Depends: mame
  Depends: xjadeo
  Depends: python3-pyo
  Suggests: python3-mido
  Depends: python3-pygame
  Depends: audacity
  Depends: performous
  Depends: musescore3
  Depends: musescore
  Depends: mixxx
  Depends: mame
  Depends: hydrogen
  Depends: dsda-doom
  Depends: denemo
  Depends: darktable
  Depends: libcsound64-6.0
  Depends: butt

--> Proper transition via experimental