Install libportsmf0v5 by entering the following commands in the terminal:
sudo apt update sudo apt install libportsmf0v5
Portable Standard Midi File Library
Portsmf is "Port Standard MIDI File", a cross-platform, C++ library for reading and writing Standard MIDI Files. . Features: . - input and output of Standard MIDI Files - data structures, classes, etc. for representing music data in memory o sequence structure consisting of multiple tracks o track structure consisting of multiple events o events contain note and control data o extensible attribute-value property lists o tempo track and time signature representation - input and output of a text-based representation: Allegro files - extensive editing operations on sequences and tracks - conversion to/from binary buffers for archiving, undo/redo, etc.