Daniel P. Carter confirmed an act for Reading & Leeds Festival on his radio show yesterday.
Mastodon will headline The Pit stage on the Reading Saturday and the Leeds Sunday.
Previously confirmed acts include Twenty One Pilots, Parkway Drive, Biffy Clyro, Fall Out Boy and Sleeping With Sirens.
The organisation will announce even more bands later this week.
Check out the full line-up (so far) below.
Reading & Leeds Festival will take place across the weekend of August 26 - 28 at Reading's Richfield Avenue and Bramham Park in Leeds.
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