On Canadian radio you only hear The Poppy Family's slowed-down version of this one, originally by eventual NRBQ member AlAnderson's first group:
Very cool. Never heard the original before. I love Sabbath, but this is better, I don't even mind the horns. Reminds me of Bloodrock.
I've got a better idea. Stop worrying about street cred and just enjoy music. Why drive yourself crazy? All music is borrowed in one way or another. I just think it's fun to track down the originals and enjoy them for what they are, as well as any and all cover versions.
I think this thread has become the King of repostings. I can say this with some expertise, as I have not only repeated the posts of others, I have also unknowingly repeated my own post. Twice, yet. Yesterday I posted the original of "Hold Me, Thrill Me, Kiss Me", which I couldn't recall being posted earlier. Well not only had it been posted, I was the one who posted it. But that was nothing compared to this: Not only had I posted this track before, but I had also posted about Chuck Jackson's original version, which I was so shocked to learn of in the recent post above. The lesser-known original version » I have no memory of that earlier post at all. There's a name for this sort of thing, and it's called... Er... Um... Gimme a sec, it's on the tip of my tongue...
The entire Joseph Consortium recording of Joseph and the Amazing Technicolor Dreamcoat, which predates the stage show by several years. Actually, there are several other musicals where they were released as concept albums before they were adapted to the stage (e.g. Jesus Christ Superstar, Les Misérables).
Although the original version is hardly unknown, I've heard people who think that Clapton wrote "I Shot the Sheriff".
Here's Mick Jackson's version of Blame It on the Boogie, which would be a hit for The Jacksons (and yes, the artists' names are coincidentally similar).
One of George Strait's signature songs is the classic rodeo rider's lament "Amarillo by Morning." The lesser-known original was by Terry Stafford in 1973.
Here's one I found just recently. The 1976-77 worldwide hit "Living Next Door to Alice" by Smokie was first recorded in 1972 by the Australian group New World:
Don't think this one's been posted yet. Johnny Kidd (then still Fred Heath) gave some demos to a publisher in early 1959 including this song which was then recorded on Parlophone by The Bachelors (apparently not the later Decca lot). Peter Sullivan at HMV heard Heath's demos and snapped him up for HMV where Fred became Johnny Kidd and The Pirates. Although JK and TP debut was Please Don't Touch, the original release of the tune was this version which preceded Kidd's by a month or so. I think it's pretty cool with an Everly's thing going on and unusual chords - very different from Kidd's version.