... that analyses the MIDI file. Chords, keys, and time signatures can also be created or updated manually - this allows you to play along with an audio source without requiring a MIDI file.
The program contains a sequencer-style display that can be used to control the volume, panning, muting, solo'ing and patching of the tracks of the MIDI file.
Audio can be rendered with the program's builtin synthesizer (using SoundFonts), or an external synthesizer.