K-ON! Sakura Kou Keionbu Official Band Yarouyo!! (「けいおん!」オフィシャル バンドやろーよ!! K-ON! Sakura Kou Keionbu Official Band Yarouyo!!) is a collective album of Sakuragaoka High School's Light Music Club's band Ho-Kago Tea Time, containing various alternative versions of previous songs, instrumental versions, background music which was not featured on the "Original Soundtrack Albums" and basic introductions in playing the instruments guitar, bass, keyboard and drums, taught by Sawako Yamanaka.