Yōko Hikasa
"Cagayake! Girls" is a single used as the opening theme for the first season of the anime K-ON!. Sung by Aki Toyosaki as Yui Hirasawa on vocals with Yōko Hikasa as Mio Akiyama, Satomi Satō as Ritsu Tainaka, and Minako Kotobuki as Tsumugi Kotobuki as backup, it was released on April 22, 2009 in Japan by Pony Canyon where it debuted at fourth in the rankings on the Oricon weekly singles chart, selling approximately 62,000 copies.