Soft cell released tainted love, but on one of their twelve inch versions containd a remix of the song that had lots of 'trippy' sound effects and echos, what is this remix called?
I think the track you are referring to is Tainted Love/Where Did Our Love Go? which is available on the Soft Cell album Non Stop Ecstatic Dancing. It is a song which extends Tainted Love and then goes into a cover version of Where Did Our Love Go?