FILE - In this March 11, 2014 file photo Coldplay's Chris Martin, right, and Jonny Buckland perform at the iTunes Festival during the SXSW Music Festival in Austin, Texas. Coldplay, Taylor Swift, and ... more 
FILE - In this March 11, 2014 file photo Coldplay's Chris Martin, right, and Jonny Buckland perform at the iTunes Festival during the SXSW Music Festival in Austin, Texas. Coldplay, Taylor Swift, and One Direction are part of the star-studded lineup for this year's iHeartRadio Music Festival, Clear Channel announced Wednesday, July 23, 2014. (Photo by Jack Plunkett/Invision/AP, File) less 
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Associated Press
Wed, Jul 23, 2014 9:17 AM EDT