Frank Zappa stands out in my own mind as being one of those few musicians who,if he doesn't already have one,deserves a musical sub genre named after him much in the same manner as Bo Diddly. He seems to have bought all his influences together into a sound that was unpredictable,cocky,witty,explicit and often downright ingenious all at the same time. Following the breakup of the original lineup of the Mothers Of Invention in the early 70's,Zappa regrouped to record two seminal instrumental releases in utilizing the still relatively new jazz-fusion genre. The music's blend of jazz improvisation through psychedelic era rock was just about the perfect base from which Zappa to continue to perfect his art. Best part was his own musical innovations were already moving in that direction organically anyway. Retaining the talents of Ian and Rush Underwood,Don Sugarcane Harris and of course George Duke,he also bought in talents such as Jean Luc Ponty,Napoleon Murphy Brock and even Tina Turner and the Ikettes on backing vocals for this album to re-create,in new vocal and melodic ways,what he'd achieved with his previous two studio releases.