Bruno Mars will be singing his heart out this September…

The 27-year-old part-Puerto Rican singer will perform at this year’s iHeartRadio Music Festival in Las Vegas.

Now in its third year, the festival has quickly become a home to a who’s who of artists across all radio formats.

Mars, currently on a world tour to promote his sophomore album, joins a lineup that includes Miguel, Justin Timberlake, Katy Perry, Elton John and a special pairing of Queen with Adam Lambert.

The two-day festival will be held on September 20 and 21 at Las Vegas’ MGM Grand Arena, with a first-time Fan Village set to run during the day at a 15-acre parking lot adjacent to the arena. That space will be free to ticketholders and will feature performances from Miley Cyrus, Avril Lavigne, AWOLNATION and Jason Derulo.

The main festival lineup was announced Monday morning in a press conference hosted by Ryan Seacrest.

The 2012 iHeartRadio played host to several impromptu duets and collaborations, including a kickoff performance of No Doubt joined by P!nk for “Just A Girl” and more.

Here is the lineup for the 2013 iHeartRadio Music Festival:

Justin Timberlake
Katy Perry
Elton John
Muse
Tiësto
Chris Brown
Keith Urban
J. Cole
fun.
Bruno Mars
Phoenix
Zedd
Maroon 5
Miguel
Tim McGraw
Ke$ha
Thirty Seconds to Mars
Benny Benassi
Special live appearance by Queen and Adam Lambert

Lineup for iHeartRadio Music Festival Village (multiple stages):

Miley Cyrus
Avril Lavigne
AWOLNATION
Pete Tong
Twenty One Pilots
Jason Derulo