The files on this disk are cut down versions of what you get on the proper Twiddly Bits disk. Each MIDI file only has one track in these demos; the full version has numerous.

The Twiddly Bits disk is available on an MS-DOS disk for £19.95 from:
Keyfax,
PO Box 4408
Henley-on-Thames,
Oxfordshire,
RG9 1FS

Have fun, then...