Firefly Music Festival fans (Photo: Lauren Holloway, WBOC)

Fitz & The Tantrums perform at the Main Stage (Photo: Lauren Hitch, WBOC)

Of Monsters & Men (Photo: Sean Streicher/ DelmarvaLife)

A fan ‘crowd surfs’ during the Flogging Molly show (Photo: Lauren Holloway/WBOC)

Ellie Goulding (Photo: Sean Streicher/DelmarvaLife)

Teen Men set the tone for Firefly Music Festival on Friday

Tord Øverland Knudsen of The Wombats performs at Firefly Music Festival in Dover, Del. (Photo: Lauren Holloway, WBOC)

Civil Twilight rocks the stage at Firefly Music Festival in Dover, Del. (Photo: Lauren Holloway, WBOC)

Vince Staples jumps up and down at Firefly Music Festival in Dover, Del. (Photo: Lauren Holloway, WBOC)