All the music thus far from the fabulous second season!
Updated with K-ON!! OST Vol. 2
K-ON!! Insert Song Single – “Pure Pure Heart” by the Houkago Tea Time
K-ON!! (Second Season) Opening Single – GO! GO! MANIAC
K-ON! Official Band Yaro-yo! Part Two – by Houkago Tea Time and DEATH DEVIL
Having a K-ON! season 2 is pretty much expected. Moe sells I guess.
[UPDATE: Second season comes out on April. Woah, that's too soon. //source]
K-ON! Rendou Oubo Special CD – “Fuwafuwa Time” #6 “Gakuensai!” Version (Chorus: Husky Yui)