Walk the Moon

Never in its nearly two decades of existence has Lollapalooza scheduled two more polarizing headliners than Sam Smith and Metallica.

Don't worry: Rock and roll is well represented, thanks to the likes of Jack White, Hozier, Arctic Monkeys, the Weeknd, Florence + the Machine and others.

The '80s are not dead thanks to bands like Walk the Moon.

Walk the Moon brought their Talking Is Hard tour to New York City for two consecutive nights, and had some help from Australian indie rockers the Griswolds.