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nightcore does, in fact, not rule
(lemmy.blahaj.zone)
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I take it you don't know what Alvin and the Chipmunks was, and dear God, I'm old.
EDIT: I suppose I should explain the premise then. It was a cartoon about these singing chipmunks that formed a band, and the episodes would often feature them performing pop songs. And their voices were pitched way up.
Here's an example.
Your example is from the '80s cartoon show, but Alvin and the Chipmunks are far older than that. They were a band (originally David Seville and the Chipmunks) formed in 1958, using a sped-up technique developed by David Seville (real name Ross Bagdasarian).
It did have a cartoon spinoff in 1961 named The Alvin Show, then later after David Seville's death, an '80s cartoon show named Alvin and the Chipmunks. And then in the early 2000s, a series of live-action/CG films.
When I was a kid (in the early '80s), my parents had several vinyl records of David Seville and the Chipmunks and I used to listen to them on repeat all the time. They also had a vinyl record of David Seville's "Witch Doctor" single, which pioneered the sped-up chipmunk voice effect. That song was an earworm! We'd be singing it for days after hearing it once. It's no wonder Alvin and the Chipmunks became a hit sensation.
Thanks. Guess I'm not that old. ;)