AUDIO DEFENCE Are a dj duo from Belfast formerly known as mk that consists of two brothers martin and kieran. They first started playing trance music for clubheat playing the local pubs and clubs then after hearing there first hardstyle track they were hooked their first hardstyle gigs came from rehab and with their hard and uplifting beats and their energy on the decks they rocked dance floors from start to finish within a short time they played most of the clubs in Belfast and even one across the boarder for the likes of concept TFI and react Ireland to name a few.