Insomnia began as a 1995 dance classic by Faithless, built around a sleepless rave narrative and an iconic synth line. Mike Candys and Jack Holiday reworked it into a big room house version in the early 2010s, giving the riff a heavier festival drop and a cleaner club mix. That version travelled through DJ sets, party compilations and online soundboards, where short excerpts became reusable hits for edits. It remains popular because the melody is instantly recognisable to dance fans while still working for listeners who only know it as pure energy.