PHOTOS: 2016 Firefly Music Festival

Music fans are in Dover for the Firefly Music Festival.

Campers begin arriving Wednesday at the Woodlands festival site near Dover International Speedway, where 90,000 fans gathered last year for the four-day festival. The festival began Thursday and runs through Sunday.

Saturday's musical acts included Florence + The Machine, deadmau5, and Death Cab for Cutie.

Sunday's headliner is Mumford & Sons. Blink-182 and Earth Wind & Fire are also playing.