Rihanna, Deadmau5, Clavin Harris and Sebastian Ingrosso will play a charity event in LA on Grammy night.

Rihanna and Deadmau5 are the marquee names set to headline a Feb. 12th, 2012 charity performance at the House of Blues in Los Angeles. The $1000 ticket price will benefit the Children’s Orthopaedic Center and The Mark Taper–Johnny Mercer Artists Program at Children’s Hospital Los Angeles. But don’t think a 4 figure entry fee will get in the way of a packed house: the performance goes down the same night as the 54th Annual Grammy Awards, and we expect the music industry’s A-listers to make conspicuous appearances – both in the crowd and, we hope, on stage.

Calvin Harris, Sebastian Ingrosso, Chris Lake and Michael Woods are also scheduled to play sets at the charity event.