FluidSynth is a software real-time synthesizer based on the Soundfont 2
specifications. FluidSynth reads and handles MIDI events from the MIDI
input device. It is the software analogue of a MIDI synthesizer.
FluidSynth can also play midifiles using a Soundfont.

Optional deps are libsndfile, lash, portaudio, and jack-audio-connection-kit.