The description of abcm2ps just tickles me. I'm amazed and impressed that someone concerned with organ scores for Baroque music is also a person who can hack Postscript. The geeks of the world are certainly diverse.
abcm2ps is a package that converts music tunes from ABC format to PostScript. Based on abc2ps version 1.2.5, it was developed mainly to print baroque organ scores that have independant voices played on one or more keyboards, and a pedal-board. It introduces many extensions to the ABC language that make it suitable for classical music.