Binary package “gmidimonitor” in ubuntu noble

GTK+ application that shows MIDI events

 GMIDImonitor is GTK+ application that shows MIDI events.
 .
 You need to connect desired source of MIDI events to gmidimonitor
 input using some kind of patchbay like qjackctl, patchage. For
 restoring connections (not connecting every time) you can use LASH.