Which vinyl version of COCO are you referring to? Like Sammy Davis, Jr. and GOLDEN BOY, there were two. Evidently, Miss Hepburn was so unhappy with the first version after it was released, she insisted on a re-recording, and, it seems, not of just her tracks. Even some of the dance arrangements between the two are different (I once had them both). The main problem is, that on the re-recording, Miss Hepburn's tracks are so electronically manipulated and filtered, it's rather like an aural version of the Lucille Ball film of MAME- there's just too much aural filter to get through.
Well-well-well-what-do-you-think-of-that-I-have-nothing-here-to-pay-my-train-fare-with-only-large-bills-fives-and-sevens....