[CM] music5

[Bill Schottstaedt]

I got Max's book, and it answers my questions: there were no
real differences between music 4 and 5 (the latter tried to avoid
machine code, instruments and note lists could occur in the
same file, and the input syntax was lightened up a bit).
Also, Max himself did the 36-bit stuff -- that was not for
the PDP-10, but for the GE645 -- I didn't even know General
Electric made a computer.  And I now have copiously
annotated input, so I have no excuse.