Sven Sieperda, professionally known as KELTEK, is a Dutch hardstyle artist recognized for his dynamic melodies and powerful sounds. He adopts a methodical approach to his music creation, typically beginning with composing simple melodies on a piano and gradually expanding them with diverse phrases and tunes. As a self-taught musician, he places special emphasis on what he refers to as the "last piece of the puzzle."

Internationally, KELTEK has delivered electrifying live performances in countries such as Australia, Chile, Singapore, Mexico, and across Europe. He has graced renowned shows like Defqon.1, Tomorrowland, Intents, Reverze, Airbeat One, Electric Love, and The Qontinent.