This is an acoustic instrumental arrangement album of solo acoustic guitarist "Osamuraisan" who makes the guitar "sing", whose total views have exceeded 100 million. In commemoration of his 15th anniversary, he has additionally recorded and remixed his previous works in all genres (including unreleased recordings. The genres are J-pop, Vocaloid music, anime song, overseas songs and more) . All instruments & Arrangements : Osamuraisan (except track-11 Dr : maxtsun) Illust : Sunkai Design : kyabeshi Mix & Mastering : yasu Covered Artists : Orangestar, Keina Suda, Neru, Jin, Jimmy ThumbP, keeno, Furukawa Honpo, KEI, add9, kemu, TENMARU, UNISON SQUARE GARDEN, Maaya Sakamoto, sumika, RADWIMPS, yama, Okazaki Taiiku, Ryoichi Higuchi, Eito, Motohiro Hata, SEKAI NO OWARI, wacci, HYDE, Kinoko Teikoku, hanaregumi, Yuna Ito, Mayday, Glen Hansard & Marketa Irglova