Chris Brown and former rival Drake are working on a collaboration together.

Earlier this month, [uuid=09d7f1ef-5006-4cbe-abda-d6f608ddbd8c]Breezy posted a clip of himself[/uuid] and the Young Money star in the studio - fuelling reports they had put their differences aside to make sweet music together.

Pals of the pair - who were [uuid=2c1bba19-f54a-4810-8cd6-d4ff62938f9d]infamously involved in a bottle brawl [/uuid]in 2012 - have now told HollywoodLife.com they are working on music.

One pal told the US website: "Make no mistake, that’s going to happen. It will, but in time. Both of them like the element of surprise."

Chris and Drizzy are also said to be "talking" about getting other artists involved on their song - but it depends on their availability.

The source added: "Chris is trying to get X out and Drake’s enjoying the success of his new album sales."

Brown and Drake [uuid=61fd21fe-559d-4ab4-b410-b3d140ed63bb]reportedly kissed and made up[/uuid] at the iHeartRadio music festival in Las Vegas in September.

[uuid=280f65da-d77b-4f0b-8bcf-1f26f11b59ef]CHECK OUT MORE PICS OF CHRIS BROWN HERE![/uuid]