Two years ago, Cher and Gaga recorded "The Greatest Thing," a song that Gaga and producer RedOne had been playing with in the studio for a couple years. Originally slated for release in September 2011, the song never saw the light of day. Back in June of this year, Cher offered a quick explanation regarding "The Greatest Thing" in a fan reply on Twitter. "It's done & she doesn't like it, or want it to come out," Cher wrote at the time (and has since deleted). "She's an artist, it's up to her. I'm disappointed 2."

Now "The Greatest Thing" has leaked, since that seems to be Gaga's luck this week. This week's leak set Cher off on Twitter, mostly over the fact that it's the "wrong" version of "The Greatest Thing." Admittedly, the music does sound a little dated, a piano line and synthesized harps fighting for the focus over a dance beat and distorted vocal effects in the background. Basically, it sounds more Cher than Gaga in its particular brand of over-the-top gay dance club banger.

She tweeted, "Disappointed( Ive Sat on fkng song 4 over a yr )NOW SOME A**HOLE LEAKS WRONG VERSION ! GaGa's SINGLE IS GREAT, & THAT'S ALL THAT MATTERS"

When Radio.com sat down with Cher in late June, she mentioned that "The Greatest Thing" needed updating musically, and that's part of why it wasn't released.

"That's a weird one, but also it's the first one I actually recorded [getting back into the studio to make Closer To The Truth]," Cher told Radio.com. "I was very excited about it, and I think the music needed to be updated because we did it two years ago. I think maybe that was a problem too, but she sounds great on it."