iHeart buzz

iHEART L.A.: There's buzz around L.A. in advance of tomorrow night's iHeartRadio Music Awards, which has been promoted heavily on NBC (with chyrons for the show appearing regularly on network series) and incorporates taped performances at local venues—notably Arcade Fire's show at storied rock club The Roxy. The city figures prominently in the show in a variety of ways, we're told. As we noted previously, other performers for the event at L.A.'s Shrine Auditorium will include Pharrell, Drake, Ariana Grande, Luke Bryan, Shakira, Usher (whose appearance is likely to have chins wagging), Kendrick Lamar, Pitbull, Blake Shelton, Thirty Seconds to Mars and Ed Sheeran. Among the presenters will be Katy Perry (said to be opening the show quite dramatically), Lady Gaga, Lorde, Steven Tyler, Imagine Dragons, Chris Martin and Demi Lovato. (4/30p)