Clubstep is the first official Demon in Geometry Dash's main game, predating Theory of Everything 2 and Deadlocked. For years it was the gatekeeper — the level players ground for weeks to earn their first Demon star.
Its DJ-Nate soundtrack is one of the most recognizable in the entire game, and the level is still a milestone in many players' progression.
Soundtrack
♪ Clubstep — DJ-Nate