Sony's now-deleted CD of this classic 1968 sampler album doesn't quite get things right. First, some arcane licensing restriction forces Sony to omit Simon & Garfunkel's "Scarborough Fair", and then the compiler of this CD inexplicably dubs "I Won't Leave My Wooden Wife For You Sugar"(by the short lived "United States of America") from a scratchy old record, despite the fact that the group's lone album has appeared on CD several times, derived from the original master tapes(most recently on the Sundazed label).
My guess, is what forced the deletion of Sony's CD, is that someone informed Sony Music that the tracks by Elmer Gantry's Velvet Opera, Roy Harper & The Zombies weren't Sony-owned. They were licensed recordings...on which Sony Music's license had expired decades ago. Sony apparently decided that it wasn't worth the hassle(and considerable expense) to get this disc back into print.
I bought Sony's CD, then, using my own CD recorder, made my own corrected disc that conforms to the contents of the original 1968 L.P. and takes all the selections from full-fidelity sources.
This doesn't change the fact that "The Rock Machine Turns You On" was one of the greatest UK sampler L.P.'s of its' era, certainly up there with Island Records' "Bumpers" & EMI/Harvest's "Picnic:A Breath of Fresh Air".