The ‘Between The Sheets’ tour is currently underway and on Monday the Chris Brown and Trey Songz headlined tour stopped in Atlanta and the fellas brought some backup from a few R&B OG’s.

Chris Brown paid homage to R&B vet R. Kelly on his latest album ‘X’ which features a track titled ‘Songs on 12 Play’ and also has a song with Kels titled ‘Drown In It’ but at their Atlanta show he decided to bring the man himself out.

R.Kelly hit the stage and got the crowd hype as he delivered his hits ’12 Play’  “Ignition (Remix)” and “Bump N’ Grind.” That wasn’t it, the guys also brought out Keith Sweat to keep the sexy party going as he belted out his hit ‘Nobody’.

Check out some of the other special guest that appeared.

[Photo via Monica Instagram]