Mutex (or MTEX) is the predecessor of all approaches to typeset music on the
basis of TeX.
If you are interested how such a Mutex output looked I can show it to you.
Now that I've the permission to put works by Heinz Irsen into my music archive
http://www.gmd.de/Misc/Music/scores/ you may go there and look for "Irsen".
There are currently five work, four of them are typeset with MusiXTeX and
one, "Trio(2) for two violins and viola", is typeset with Mutex.
Click onto the icon behind "Trio(2)" to see a GIF-image of the violin part,
click on "Trio(2)" to fetch the PS-File with all three parts.
Enjoy -- Werner
