This tape is labeled:

MUSIC SYSTEM

It appears to by produced by Software Technology Corp, a division of 
Processor Technology Corp.  It contains:

MUSIC M 0000 082E
PRELD M 08D3 09AE
ALLEG M 08D3 02D2
SARAB M 08D3 059F
AIR   M 08D3 0CF7
CHORL M 08D3 08B4
END   ? 0000 0001

This is the music program that caused the disappearance of CPMUG disk 39.  It 
toggles the interrupt enable line on the CPU on and off at a fast rate.  The 
Sol did not use this line.  I tried to get it to run of a Northstar (Z80) but 
the hardware was too different.  Three voice harmony.  The price was right 
considering any other method of making music cost over $100 per voice.