Ichiban Ippai (MOVIE size Ver.) (いちばん いっぱい (MOVIE size Ver.) Ichiban Ippai (MOVIE size Ver.)) or Full of Number Ones (MOVIE size Ver.) is a single and alternative shorter version of Ho-kago Tea Time's song Ichiban Ippai, produced by Pony Canyon and published on the 19th of February 2012 within the album K-ON! Movie - Official Band Yarouyo!! K-ON! Movie Hen. The song is the shorter version of the opening theme song for the K-ON! Movie. The song was sung by Yui Hirasawa's voice actress Aki Toyosaki, written by Shouko Oomori, composed by Tom-H@ck and arranged by Hajime Hyakkoku.