The abcMIDI package contains the following :

    abc2midi - a program to convert abc notation to MIDI files.
    midi2abc - a program to produce crude abc from a MIDI file.
    abc2abc - a utility to do transposition, error checking and re-formatting
on an abc file.
    yaps - (NEW) utility to convert abc to PostScript based on Michael
Methfessel's PostScript library for abc2ps.