Here are a few to get things started:
Don Henley’s The Boys of Summer as an 80s synth tune
Bossa nova version of Crowded House’s Don’t Dream It’s Over
Reggae-ish version of Aretha Franklin’s Respect
A capella men’s ensemble version of Lady Gaga’s Bad Romance
`````Perpetuum Jazzile’s Acapella cover of Toto’s` Africa’ is pretty neat. It’s with it for the simulated rain sound at the start alone (and the beatboxing):
https://youtu.be/yjbpwlqp5Qw