as title says.
One of my recent favourites is the ridiculous level of autotune on jedwards cover of under pressure

https://www.youtube.com/watch?v=J8Cq6rVAWt8

just after the 1 minute mark they just give up and sound like robots for a few seconds.

Farrah Abraham is another great example

https://www.youtube.com/watch?v=8aqhRKU5CFM

not even vaguely close to sounding like anything ever made before on this planet

hit me