…and so you’re back, from outer space,
I just walked in to find you here
with that sad look upon your face,
…
Wasn’t that Donna Summer?
That’s not Diana Ross, it’s Gloria Gaynor!!
What kind of Disco Queen are you? Turn in your big sparkly ball right now.
I’ll meet you halfway - Diana Ross did record it, I’m sure.
And you’re welcome to that damn mirror-ball 
LOL - 
Gloria Gaynor recorded it first. Miss Ross covered it a couple decades later. She was quoted at the time as expressing her hope that the song would come to be seen as an anthem. Um, hello? Already is, sweetie!
Huh. I always suspected they were undead, but I never knew she was a cleric…