I wouldn't exactly call an opening act for a club band legendary. Hell, I wouldn't call any club acts legendary unless they were at one time VERY popular such as Grand Funk Railroad, Styx, Foreigner, Kansas and quite a few others. But current bands who have never made it past the club scene sure are NOT legendary.
Aces High, my #1 favorite vocal performance EVER has been TIED with the opening part on The Red And The Black! I NEVER thought that would happen! WOW!