I would have thought the original was quite familiar to most here, but apparently that was not the case.
Yup - that song never reached huge fame here in the states ... at least not in my circles. First time I ever heard it was in a mashup from "Stars on 45"
That said - nice job, John. One comment - when you trigger the harmony - your lead vocal disappears, and moves much farther back in the mix. Maybe take a listen to that section again. Your lead was crystal clear all the rest of the time.