The Beatles changed in the very short amount of time they existed. They put out about ten albums in 7 or 8 years and comparing the first with the last they’re almost unrecognizable. Listening with modern ears it’s clear they’re all The Beatles but that’s mostly because of the ubiquitousness of their music.

Dir En Grey started as J Pop, then one day appeared on a talk show and were from then on Gothic Death Metal.

Katy Perry was a riot-grrl indie-rocker before she became a pop diva.

David Bowie. The man has had a handful of completely different musical careers, essentially.

Taylor swift went from super country in “Our Song” to super pop in things like “Blank Space”, " Call It What You Want", and “End Game”

for some reason my comment showed up in another post so I had to delete it.

deadmau5 didn’t quite do a change of genre but he sort of just adapted with the times to the point that his older music is kind of unrecognizable. His first album “Get Scraped” is much closer in tone to “big beat” and would definitely fit if it were made by artists like The Prodigy or the Qemists, but even then has a few songs that are fairly instrumental and you would likely hear more of on “Where’s the Beat” and “There’s the Beat” like “Careless,” “I Forget,” and “Waking Up From the American Dream.” He pretty quickly switched styles to sort of dark, deep House and Techno with “Random Album Title”. Nowadays he sort of plays a mix of both, and even his modern songs like “Pomegranate” sound closer to a pop song and probably would’ve got him thrown out of the underground scene 10 years ago