DJ Seduction (AKA John Kalkan) started his career in 1989, DJing at events such as The Dungeons and Crowland Road, and on the pirate station Sunrise FM. In 1991 he was signed to ffrr and released Hardcore Heaven which stayed on the UK charts for several weeks. DJ Seduction then started one of the most successful Happy Hardcore labels of all time, Impact Records, and was also heavily involved in setting up the Hardcore Heaven and United Dance events.