Had to reply to this again - I've just been down a rabbit hole called Mr Youtube, here, there and everywhere and come full circle back to cover versions.

Did you know that Tainted Love by Soft Cell was a cover?

Here's the original by Gloria Jones from 1964

I further learnt that Marilyn Manson covered it later (you don't have to watch more than 30 seconds of this one)

Much as I used to love the Soft Cell version, after listening to Gloria Jones, Soft Cell seemed a little, well, soft... Isn't that interesting, given what I said earlier (about usually preferring the one I heard first)?

In the comments, someone said they were head banging to Gloria Jones. Me too!