Crystal Kay
Crystal Kay 「BEST of CRYSTAL KAY」 (2009/9/2) ONE Strings Arranged by Gen Ittetsu Strings by Gen Ittetsu Strings「ONE」 (2008/7/16)*シングル
Crystal Kay 「BEST of CRYSTAL KAY」(2009/9/2)MotherlandStrings by Gen Ittetsu Strings 「Motherland」(2004/5/12)*シングル
Crystal Kay「Call me Miss…」(2006/2/22)I KnowStrings: Gen Ittetsu Strings
Crystal Kay「Call me Miss…」(2006/2/22)KTKStrings: Gen Ittetsu Strings
Crystal Kay「FLASH」(2010/6/16)OutroStrings by GEN ITTETSU Strings
Crystal Kay「FLASH」(2010/6/16)I prayStrings by GEN ITTETSU Strings