I acknowledge that there is a game that's similar to this one(If avatars could speak) though it is for quotes and not whole songs. There is another game similar to this one(Pick a song for the person above you) though it's about what song reminds you of the person above you.
What song do you imagine the above avatar/signature picture singing?
No inappropriate songs!
No offensive songs!
I recommend that you put a link to the song in your post.