"music" = 'recorded music'

[jdespres at MERRIAM-WEBSTER.COM]

Here's the earliest cite in our files:

Processed music, as everybody knows, does not sound exactly
like fresh music, though with good engineering at the source and
with careful handling of a good receiving instrument, its final
reception can be pretty convincing.

Virgil Thompson
The Musical Scene
Knopf, 1940
p. 252

Joanne Despres
Merriam-Webster