The abcMIDI package contains these utilities :
  abc2abc - a simple abc checker/re-formatter/transposer
  abcmatch - Search for specific sequences of notes in an abc file com‐
             posed of many tunes.
  abc2midi - converts abc file to MIDI file(s)
  mftext - dump a MIDI file as text
  midi2abc - converts MIDI format files to abc notation
  midicopy  -  Copy selected track, channel, time interval of a MIDI
               file to another MIDI file
  yaps - converts an abc file to a PostScript file

Each of these utilities has an associated man page.

The know more about the abc notation, abcMIDI and software available,
follow these links:
http://abcnotation.com/
https://ifdo.ca/~seymour/runabc/top.html
http://abcplus.sourceforge.net/
http://abcnotation.com/software#abctool

You will find compressed archives of the tcl GUI runabc and its guide
here: http://slackware.uk/slint/x86_64/slint-testing/source/abcMIDI