D.I.D refers to more than one artist:
1) D.I.D. (until the Day I Die) is a japanese visual kei band formed in mid 2012 , that started its activities in 2012/07/06.
Vo.茜 (Akane) (ex-ポッキーげぃむ → ｊｕｌｉｕｓ → Para:noir → D.I.D.)
Gt.叶真 (Tohma) (ex-dolore → D.I.D.)
Ba.翔(Shou) (ex-ZEXER → Para:noir → D.I.D.)
Dr. 壱世 (Issei) (ex-Ｎｅｏ → 2the discoland → D.I.D.)
ex members:
Dr.宗 (Takashi)
Gt.暁 (Satoshi) (ex-フィズ → レトルト → Para:noir → D.I.D.)
http://did-official.com/
2) D.I.D is the new name of the Nottingham, UK band Dog Is Dead
http://www.last.fm/music/Dog+Is+Dead