If Bob Pittman has any concerns about cozying up to one music label, he isn’t showing it.

Pittman’s radio-station conglomerate Clear Channel and Len Blavatnik’s Warner Music Group hosted a huge two-night backstage lounge at the annual iHeart Radio music festival in Las Vegas.

On the guest list for the Nobu-catered event at the MGM were Yahoo! chief Marissa Mayer, digital whiz Sean Parker, media personality Ryan Seacrest, Cablevision’s Jim Dolan, Relativity Media’s Ryan Kavanaugh and entrepreneur Ron Burkle.