It was probably just me, but I felt like it sounded a tad inaccurate, or out of tune or something. But otherwise, it was excellent. The timing was pretty much dead on, not very many mistakes at all. And I think the music in the background is fine where it is

Crit mine please?

Very well done. The only reason this may sound off to others is twofold: one, your tone is different than theirs, and two, you're only playing one part of a two-part harmony.

Good job!

C4C, please? XD