FILE – In this Sept. 19, 2014 file photo, Taylor Swift performs at the iHeartRadio Music Festival in Las
Vegas. Swift and Metallica are among the lineup for the U.S. debut of the Rock in Rio music festival May
2015. The festival announced Friday, Sept. 26, 2014, that No Doubt and Linkin Park will also perform on
the main stage during the four-day festival in Las Vegas.