This is the
Montréal session tunebook
as of April 2017.
It was downloaded from music.gordfisch.net and unpacked here for local use.
You might want to visit their site
to get the current version rather than using this copy.
I've been experimenting with tools to do useful things in
directories full of .abc tune files:
Session lister -
Tune lister -
These are "works in progress" that I've included here to get ideas for
making them more useful.