Backbeat: Rihanna, Deadmau5 Play Roc Nation/Three Six Zero Grammy Afterparty; Execs Get Down
Backbeat: Rihanna, Deadmau5 Play Roc Nation/Three Six Zero Grammy Afterparty; Execs Get Down

Singer Rihanna performs at the Three Six Zero Group's & Roc Nation Grammy afterparty charity concert benefitting Children's Hospital of Los Angeles at House of Blues Sunset Strip on Feb. 12, 2012. (Photo: Arnold Turner)

Rihanna kept it blonde and Deadmau5 took off his head at a packed Hollywood party benefitting the Children's Hospital of Los Angeles. Revelers danced hard at the House Of Blues on the Sunset Strip after the Grammys concluded Sunday night and well into the early Monday hours. Organized by Jay-Z's imprint Roc Nation and Three Six Zero Group, the event proved to be one of the hottest after-parties in town.

Check Out All Our Grammy Coverage Right Here

At Least It's for A Good Cause: Island Def Jam's Senior Vice President, Media and Artist Relations Gabe Tesoriero, Roc Nation's Jay Brown and Erik Hermansen of the production team Stargate. (Arnold Turner)

The evening featured opening sets from Scottish House DJ Chris Lake, Sebastian Ingrosso of Swedish House Mafia and Calvin Harris. Live Nation VP of Theater and Club Programming Kelly Kapp (one of Billboard's "30 Under 30" in 2007), Actress Ellen Pompeo, her husband (and music producer) Chris Ivery, football star Reggie Bush, and Roc Nation Partner John Meneilly, Roc Nation President and Partner Jay Brown and Roc Nation's Tyran "Ty Ty" Smith were among those who packed the House Of Blues to catch Rihanna, Deadmau5 and the rest.

VIP sections downstairs and in the balcony featured an open bar and waitresses clad in black corsets, thigh stockings and boots serving bottles of Grey Goose and Ace of Spades with lit sparklers which complimented the fancy light show happening all night on the stage. Rihanna didn't go on until 12:30 and only performed two songs, "Where Have You Been" and "We Found Love," but both of them (backed by Harris) brought the house down with some literally jumping up on couches to get a better look.

Check Out All Our Backbeats Right Here

Also spotted in the room: Barry Weiss, Chairman & CEO, Universal Republic & Island Def Jam Motown, S hawn "Pecas" Costner of Def Jam Recordings, Island Def Jam's EVP of Media & Artist Relations Laura Swanson, Executive VP of A&R Karen Kwak and Roc Nation management signee, singer/songwriter Ester Dean.

Foggers, massive LED displays and confetti cannons added atmosphere to all of the performances and Deadmau5 seemed to make the best use of the vibe when he went on about ten minutes before 1am. The mouse helmet was off early on, sitting beside him on the table.

Proceeds from the event were aimed to benefit the Children's Orthopedic Center and the Mark Taper-Johnny Mercer Artists Program at Children's Hospital Los Angeles. All of the artists who performed reportedly donated their time. Tickets started at $250.

Mouse on Mars: Deadmau5 digitall DJing (Arnold Turner)

Shawn "Pecas" Costner, (left), SVP, Def Jam Recordings with Barry Weiss, Chairman & CEO, Universal Republic & Island Def Jam Motown (Arnold Turner)

Rihanna onstage at the Roc Nation-Three Six Zero Grammy afterparty
benefit for the Children's Hospital of Los Angeles (Arnold Turner)

Noel Lee, Chairman/CEO MonsterNoel Lee, Chairman/CEO Monster Cable, wants you (Arnold Turner)

From left: Scott Vener, producer & music supervisor "Entorage," Andrew Shack and Jon Platt, President of EMI Publishing (Arnold Turner)

Jonathan Dworkin, Global Head of Entertainment Business Affairs & Development, Nokia (Arnold Turner)

Network Capital Funding Executives (from left):
Ronnie Jimenez, Tri Nguyen, Hugh Nguyen, Chris Tran and Sam Rumi (Arnold Turner)