Install smf-utils by entering the following commands in the terminal:
sudo apt update sudo apt install smf-utils
Description:
Utilities to support the smf library
LibSMF is a BSD-licensed C library for handling SMF ("*.mid") files. . This package contains smfsh an interactive command-driven frontend to libsmf, useful for modifying MIDI files by hand.
Homepage: http://sourceforge.net/projects/libsmf/
Version: 1.3-2ubuntu3
Section: universe/sound