The idea of this thread is a simple one, pretty much what it says on the tin:
1: Review the song submitted by the previous poster. It doesn't have to be a full, in-depth review, but just leave a couple sentences about what you liked and didn't like, what surprised you, etc. You can also give it a numerical score if you like.
2: Post another song for the person after you to review! It can be anything, really, though I'd recommend it be (a) not ridiculously long and (b) not extremely well known- this thread is about exposing people to new, interesting music, after all!