Taylor Swift, Joel Crouse, Austin Mahone, and Ed Sheeran perform at Lincoln Financial Field in Philadelphia on July 20, 2013.
Listen to Taylor Swift on iHeartRadio
Photo: Rachel Kaplan for iHeartRadio
Listen to Austin Mahone on iHeartRadio
Listen to Ed Sheeran on iHeartRadio
iHeartRadio Album Release Party with Tim McGraw
iHeartRadio Album Release Party with Florida Georgia Line