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WATCH: Katy Perry opens up about 'Roar,' John Mayer on GMA

JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!

 

Check out the full lineup for this year's iHeartRadio Music Festival

 

 

WATCH: Katy Perry opens up about 'Roar,' John Mayer on GMA

Listen to Katy Perry on iHeartRadio

iHeartRadio Music Festival performer Katy Perry stopped by "Good Morning America" Friday morning, where she talked about her new video for "Roar," her collaboration with John Mayer and more.

"Roar" is Katy's 8th single to go #1, topping the charts  this week. Her upcoming album, Prism, is due out October 22nd.

Check out the video below.

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Katy also revealed the art for her new album on GMA. Check it out:

 

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