Nhóm gồm có các thành viên chính:-Jo Yoo-Jin-Jeong Woo-Jin-Young Yoon-Geun-Sohn Sang-HyukCác album đã phát hành:-Head-Up, album1, 2000-Made in Korea, album 2, 2002-Ducks Fly, album 3, 2003-You Pass Me By, single, 2004-Peace N� Rock N� Rol, album 4, 2006-Rewind, remake album, 2007-Rolling Heart, digital single, 2008-Orange Road, single, 2008-ROCKSTERIC, album 5, 2009
