Who is headlining Lollapalooza, Summerfest, Outside Lands, Governors Ball....
When: July 31, Aug. 1-2
Notable: Instead of just one night, two nights are covered by older rock acts: Metallica and Macca. Metalacca?
Headliners: Paul McCartney, Metallica, Florence + The Machine
Second-liners: Sam Smith, Bassnectar, The Weeknd, alt-J, Alabama Shakes, Of Monsters And Men, Kaskade, Kid Cudi, Alesso, Tame Impala, A$AP Rocky