Install kmidimon by entering the following commands in the terminal:
sudo apt update sudo apt install kmidimon
Description:
MIDI monitor using ALSA sequencer and KDE user interface
KMidimon can monitor a MIDI data stream, in order to diagnose a malfunctioning piece of equipment or to examine the contents of a MIDI sequence during playback.
Homepage: http://kmidimon.sourceforge.net
Version: 0.7.5-3
Section: universe/sound