Cher has a new album under way and she's recorded a song writtne by none other than Lady Gaga.

Cher has recorded "The Greatest Thing," a song penned by Lady Gaga and RedOne, for her next album. In a tweet late last night, the pop icon declared "Just walked in from studio! Finished 1st track on new cd &......."GAGA" YOU ARE THE GREATEST THING TO ME." The singer later clarified that the track is not a duet, and that Gaga had given the song to her as a gift.

Here's the Lady Gaga version. We'll have to wait to hear Cher's take on the song.

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