Brad Pitt performs on stage with Bruno Mars in New Orleans

They sang 'Sex Machine' by James Brown. Fitting.

Brad Pitt may be a fine actor but Bruno Mars obviously has little faith in his musical abilities.

Brad surprised and delighted the crowd when he took to the stage to perform with Bruno and his band as part of a charity gala in New Orleans.

Singing 'Sex Machine' by James Brown, Brad was only entrusted with a tambourine and he wasn't even mic’d up.

Still, it looks like he’s enjoying himself.

Brad has been in New Orleans for the last week and he seems to be having a ball. Last weekend he was hanging out on a balcony tossing beers over to neighbour Matthew McConaughey.

He was in town to host the gala for his Make It Right charity. Brad founded the charity in 2007 in the aftermath of Hurricane Katrina to help build homes and buildings for those in need.

Good-looking, talented and generous. Completely unfair.