Play Santanas popularity, the album was the last to feature its classic Woodstock era line-up.Before recording their fourth album Caravanserai, there had been multiple line-up changes. Bassist David Brown left in 1971 before recording started and was replaced by Doug Rauch and Tom Rutley. Percussionist Michael Carabello left Santana and was replaced by Armando Peraza. Keyboardist/vocalist Gregg Rolie was replaced by Tom Coster on a few songs.