Jeff Simmons – Naked Angels (Original Motion Picture Soundtrack)

From AllMusic.com, these are some excerpts from the review
by the great writer Richie Unterberger

If rock fans are likely to know the name Jeff Simmons, it's because of his work as bassist in the Mothers of Invention; if they know anything about his obscure solo career, the only album they're likely to know is Lucille Has Messed My Mind Up, issued in the early 1970s. But he did a yet more obscure album for Frank Zappa's Straight label, the soundtrack for the equally obscure biker movie Naked Angels, around the same time.
"It's definitely one of the better ones, in fact, in this admittedly limited genre. While it's sometimes been described as something of a collection of psychedelic jamming, the mostly instrumental tracks (co-written with producer Randy Steirling) are actually fairly short and focused."
"There's some pretty hot fuzz/distorted psychedelic guitar (particularly on the opening "Naked Angels Theme"), and unlike some biker/psychedelic soundtracks, the LP doesn't get stuck in a rut. "Ride into Vegas" glides into some pretty hip organ soul-jazz, for instance, and there's also '50s style rock & roll ("Vegas Boogie"), mildly Pink Floyd-ish folkie guitar-organ interplay ("End Theme," one of the few vocal cuts, and "Cop Out"), obviously silly psychedelicized Scottish bagpipe music ("Scots Breath"), gothic organ-piano doom ("Tuccata for Truck"), and Zappa-like sound collage ("Bar Dream"). Sure it's mostly for hardcore collectors, but as hardcore collectibles go, it's pretty enjoyable and worthwhile."