3.7 - As I understand it, fusing jazz with rock 'n' roll felt like achieving some musical holy grail for many rockers of the 1960's. But for most, the road to that grail was fraught with endless guitar noodling and free-form jamming. There's some of that excess on this record but mostly Zappa has pruned these compositions into tidier movements with enough variations in tone and texture to keep things interesting. Standouts: "Peaches en Regalia", "Willie the Pimp", "The Gumbo Variations."