 They led the heavy metal boom in the 80’s along with other bands such as Baekdoosan (백두산), Sinawe (시나위), H2O, and Black Hole (블랙홀).Boohwal, Baekdoosan, and Sinawe were called the ‘Big 3’ by the media as they were all led by talented guitarists (Boohwal – Kim Tae Won, Baekdoosan – Kim Do Kyun 김도균, Sinawe – Shin Dae Chul 신대철), had unique talented vocalists and all aimed to create heavy metal music.However, unlike bands like Sinawe, they have been concentrating more on Korean-style melodic rock ballads, especially after their 3rd album.