UNIONDALE, NY - MARCH 28:  Lil Wayne performs during his "I Am Music" tour at Nassau Veterans Memorial Coliseum on March 28,
Kevin Mazur / Lester Cohen / John Shearer / Roger Kisby

The artists slated for the second annual iHeartRadio Music Festival—set to hit Las Vegas September 21-22—have been revealed! And this year's lineup is one of the most musically diverse and high profile collections of talent for any festival in 2012 (it probably helps that Clear Channel owns iHeartRadio).

The list of heavy-hitters is pretty substantial: Taylor Swift, Rihanna, Usher, Lil Wayne, Green Day, Bon Jovi, No Doubt, Aerosmith and Swedish House Mafia are all among the artists playing the Vegas fest. Add to that list deadmau5, Pitbull, Pink, Linkin Park, Mary J. Blige and Shakira and you've got yourself a pretty slick two days of music.

For the full list of announced performers playing the MGM Grand this fall, head over to festival.iheart.com. And check out our iHeartRadio Music Fest Spotify playlist, which covers every artist scheduled to perform. Who are you most excited to see?