K-ON! Rendou Oubo Special CD (連動応募スペシャル(れんどうおうぼすぺしゃる)CD K-ON! Rendou Oubo Special CD) is a special album of the Sakuragaoka High School's Light Music Club, containing the song Fuwa Fuwa Time #6 'Gakuen Sai!' Version. The song is sung by Yōko Hikasa with Aki Toyosaki, Satomi Satō and Minako Kotobuki as backup. It was released on the 18th of November 2009 as a price for an official drawing contest in Japan by Pony Canyon.