ウィッチ

Witch was a Japanese sound unit founded in 1992 by Ooami Gou (representative director), Shimizu Youichi, and former M.N.M. Software composer Sugou Masaaki, with Fukutomi Tsuyoshi joining later. 

They mostly composed for Elf and Silky's titles. They also did a small amount of game development including Marine Buster from Silky's which was almost entirely made by them. 

Some time between 1997 and 1998 they were dissolved, and Ooami formed Choir Co., Ltd with Kunishima Ken'ichi and a few others.