You are not going to want to miss the first annual iHeartRadio Music Awards show. Not only will we be honoring your favorite artists, but the show promises some of the best performances you'll ever see.

You already knew that Pharrell, Blake Shelton, Kendrick Lamar, Pitbull, Shakira, Thirty Seconds to Mars, Ariana Grande, Luke Bryan, Arcade Fire, and Ed Sheeran were taking the stage at the inaugural awards show - but JUST added to the lineup of incredible performers is Bastille! Katy Tiz, who is bringing you a behind-the-scenes look at the awards, spilled the beans earlier today.

You can follow Katy on Twitter and Instagram and @iHeartRadio for more updates and an exclusive view behind the scenes.

Many of the performers have been rehearsing, and here are some things you can get excited about!

The stage alone promises to be jaw-dropping - as Jared Leto did during his Thirty Seconds to Mars rehearsal! Kendrick Lamar was mobbed by fans while preparing for his performance - get ready to be blown away. Luke Bryan had some fun practicing his set ... he was singing his own songs as opera! And based on Shakira's rehearsal, expect the Earth to move when you watch her tomorrow night.

You can also expect to see interviews from some more of your favorite artists - plus the premiere of an unreleased Michael Jackson song with a very special performance. You'll definitely want to see this!

Stay tuned, because there are sure to be more surprises in store. Don't forget to tune into NBC Thursday night at 8PM ET because you won't want to miss a minute of the show. 

Who are YOU most excited to see? Let us know by sending us a Tweet @iHeartRadio using #iheartawards 

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