AceShowbiz -

Thanks to a hacker who leaked Cher and Lady GaGa's "The Greatest Thing" duet, the song that was destined not to be heard is now finally online. The song, which Cher told a fan on Twitter last June was not going to be released because GaGa "doesn't like it, or want it to come out," has leaked online. Making it worse for both artists is the fact that the leaked audio is apparently the "wrong version."

"Disappointed (I've 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)," tweeted a pissed Cher. This is the latest GaGa tune to be leaked online after hackers apparently leaked her new single "Applause", forcing Mother Monster to release the single a week ahead of schedule.

After unloading a series of tweets directed at the perpetrators a couple of days ago, GaGa has chosen to focus on the more important task of coming out with the video for "Applause". The ionic pop star was spotted at popular Hollywood gay club Micky's on Monday, August 12, filming her new track's lyric video as she partied with drag queens and took selfies with the Little Monsters who trooped to the venue following her tweet.

As for the single's official music video, it will premiere on "Good Morning America" this coming Monday, August 19. The eagerly-awaited visuals were filmed last month at Paramount Studios in Los Angeles.

Lady GaGa and Cher - "The Greatest Thing":

Lady GaGa takes picture with fans: