Producer Bryan Michael Cox hinted at the possibility of a joint headlining tour by R&B stars Usher and Chrids Brown.

"Usher and the boy Chris Brown are going on tour, y'all know that, right?" Cox asked viewers on a video posted online yesterday.

While the tour has not been confirmed by representatives of either singer, Chris Brown asked fans in a message posted on Twitter: "What would you guys say if me and usher went on tour?"

Chris Brown released his third album, "Graffiti", last December and all three have debuted in the top ten on the Billboard 200 albums chart. Usher has an EP coming out next week (August 24th)  titled "Versus".