Cher - Gaga Pens Song For Cher

The Believe hitmaker has been in the recording studio this week (begs11Jul11) and she's thrilled her fans with news of one of her tracks.

Cher reveals Gaga wrote a song called The Greatest Thing with producer RedOne for the album, and now she's dreaming of a duet with the eccentric singer.

In a series of posts on her Twitter.com page, Cher writes, "I have something (to) tell u that's so great I don't know exactly how 2 say it! Been keeping it secret 4 (a) long time... Just walked in from studio... Finished 1st track on new cd &........'Gaga' 'You Are The Greatest Thing To Me '

"It's not a duet! Who knows? One can wish! It's one of her songs & she & Redone gave it to me 4 my cd! I would love (a) duet with GaGa, but she gave me (a) Great song & I'm beyond grateful!!!! It's called 'The Greatest Thing'."