I don’t know how old many of you are, but what Charlie described was known in the late 60s and early 70s as ‘sound on sound’. This layering was done with reel-to-reel tape decks, and it was a big deal.

It also was the forerunner of effects we routinely hear now in live performance. I had a device called an Echoplex, which was a short tape loop. I could play duets with myself during a solo.


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