Deep Purple guitarist Ritchie Blackmore was jamming during the band's soundcheck, when Wishbone guitarist Andy Powell joined in and began jamming with Blackmore.

[citation needed] After the show, Blackmore recommended that MCA Records sign the band.

Deep Purple producer Derek Lawrence produced this album,[1] which features elements of blues, jazz, progressive rock, and psychedelic improvisation.

The first side contains three uptempo tracks along with the ballad "Errors Of My Way" which, unusually for a rock song, was written in 12/8 time.

All tracks are written by Martin Turner, Ted Turner, Steve Upton, Andy Powell[2] "Blind Eye" and "Queen of Torture" were released on 7" single, MCA MK5061[5] (Decca 32826 in US) (February 1971)[6]