In 1978, Cope formed The Teardrop Explodes with drummer Gary Dwyer, organist Paul Simpson and guitarist Mick Finkler, with himself as singer, bass player and principal songwriter. Drawing on a post-punk version of West Coast pop music (which gained the nickname of "bubblegum trance"), the band became part of a wave of neo-psychedelic Liverpool bands. Cope and Dwyer (and later their manager-turned-keyboard player David Balfe, who served both as Cope's creative foil and his personal antagonist) were the only band constants, although seven other members passed in and out of the lineup during the band's fractious four-year existence. Several well-received early singles (including "Sleeping Gas" and "Treason") culminated in the band's biggest hit, "Reward", which hit number 6 in the UK singles chart and took the "Kilimanjaro" album to number 24 in the album charts. Cope's photogenic charm and wild, garrulous interview style helped keep the band in the media eye, and made him a short-lived teen idol during the band's peak.