Which cover versions improve on the original?

Nina Simone's "Who Knows Where The Time Goes?" is also the definitive version IMHO.

I still love the original but boy is this one smooth take on this song

kali uchis - venus as a boy

https://www.youtube.com/watch?v=47oiB_quDf8

Nina Simone does a lot of reinventions of very white singer songwriter stuff on the material I have collected as Sugar In My bowl.
Have found that an odd companion to black militancy which I thought she was about at the time.
BUt the versions are really good from what I've heard of them and I'm really glad to have them

https://www.youtube.com/watch?v=zSgZ3B-2q-g