Haley Reinhart really nails it.
Why is this cover so great!? Probably because it combines three amazing things:
1. An impeccably written pop song.
2. Talented jazz musicians.
3. A singer with some incredible pipes.
I hate to say this is better than the original, but I'm going to face my fears and say that yes, this is cover is musically better than the original. Britney's signature vocal fry will always be the most memorable version of Oops...! I Did It Again but this version by Postmodern Jukebox is just so catchy, Haley's voice is amazing, and the whole thing is perfect for the throwback-obsessed times we live in.
Here's the original since you should make the comparison and decide for yourself: