Festival dijadwalkan dari 20 Jul hingga 22 Jul 2012 (2 hari).
Firefly Music Festival berlangsung di Dover, United Kingdom. Berikut adalah alamat lengkap festival: The Woodlands of Dover International Speedway, Dover
Imagine Dragons, The Killers, The Black Keys, Death Cab for Cutie, John Legend.
Genre dan sub-genre yang paling populer dari edisi sebelumnya adalah:
rock
pop
electronic
indie rock
alternative rock
indie
indie pop
alternative
indie folk
blues rock
electropop
experimental
pop rock
electronica
folk rock
garage rock
synth-pop
americana
dance