There is more than one band called ACID: (1) An Austrian rock band of the early 70's. (2) A speed metal band from Belgium, founded in 1980. (3) A hardcore punk band from Tokyo, Japan and existed from the late 80's to the early 90's (4) A Japanese rock band founded by SIAM SHADE's former vocalist, Hideki in 2003 (see ＡＣＩＤ). (5) A french rapper or band. (6) A Polish drum & bass DJ. (7) A Romanian rapper from Brasov. (8) A psychedelic rock group from San Francisco.