The iHeartRadio Music Awards usually rival the Grammys and VMAs when it comes to star power, and this year’s ceremony at the Shrine in Los Angeles keeps that tradition alive by featuring performances by Madonna, Rihanna, Iggy Azalea, Sam Smith, Snoop Dogg and many more. Taylor Swift will also make an appearance during the show and Jamie Foxx will both host and perform at the three-hour event, which will broadcast live simultaneously on both NBC and iHeartRadio stations on March 29th. Smith – who dominated the Grammys – and Azalea lead the field in iHeartRadio nominations with five apiece, including nods in the Artist of the Year and Best New Artist categories.