These were all during the first few years of the 70's.
1.)The Allman Bros., around the time of the Fillmore and Eat a Peach releases.
2.)The Grateful Dead, twice.
3.)Spirit. The band that warmed up the crowd before Spirit came onstage was a little known band called Bachman Turner Overdrive.
4.)John Mayall, around the time of the releases of his Moving On, and Jazz/Blues Fusion Lp's.
5.)Canned Heat.
1.)The Allman Bros., around the time of the Fillmore and Eat a Peach releases.
2.)The Grateful Dead, twice.
3.)Spirit. The band that warmed up the crowd before Spirit came onstage was a little known band called Bachman Turner Overdrive.
4.)John Mayall, around the time of the releases of his Moving On, and Jazz/Blues Fusion Lp's.
5.)Canned Heat.