Cost:

What to expect: Promoters promise a lineup of rock and electronic acts at this first-year fest in Union Park.

Why to go: The Chemical Brothers, Nas & Damian Marley and Umphrey's McGee will headline, and that's just the beginning.

The full lineup:

The Chemical Brothers
Nas & Damian Marley
Umphrey's McGee
The Disco Biscuits
Moby (DJ set)
Benny Benassi
Pretty Lights
Paul Van Dyk
Cold War Kids
De La Soul
Boys Noize
Flying Lotus
Jay Electronica
Mayer Hawthorne & The County
Benga
Jakob Dylan & Three Legs
Laidback Luke
Future Rock
Dirty Dozen Brass Band
Green Velvet (Live)
Phantogram
Van Ghost
Two Fresh
Paul Kalkbrenner
Orchard Lounge
The Uglysuit
Loyal Divide