Cyclefly (typecased as CycleFly) were an alternative rock band from Cork, Ireland. The band had a cult underground following across the UK, Ireland, and the U.S., and were famous amongst fans for lead singer Declan O'Shea's wild on-stage persona and intense live presence.[citation needed] He was often known to climb to the top of lighting rigs and jump into the crowd. The band's work is also recognizable for the high-pitched, almost synthesized-sounding voice of O'Shea.