ゴルトベルク変奏曲
At a performance in Tokyo (2010) commissioned by Sumida Triphony Hall, Shimizu reaffirmed his passion for Bach by premiering the world’s first saxophone/contrabass arrangement of Bach's "Goldberg Variations", adding four contrabasses to his saxophone quintet. He went on to hone the arrangement for release as the album "Goldberg Variations" in 2015.