Born 1980, started a producing career when he was 14 years old, after hearing the first commercial house tunes back then. Producing with some cheap-ass trackers he soon discovered how to build a track. Having had classical piano lessons when he was 8 years old, he developed some sense for melodies and melody lines. After hearing the anthem 'Energy 52 - Cafe del Mar' he knew he would produce trance from then on. Nowadays he produces various styles, including progressive, ambient and techno.

In 2003 Leon and his brother Bart caught up with Maykel Piron who was working for Warner Music Benelux back then. He decided that they could have a go at remixing Libra's Calling your Name, and their Subsphere remix got released. After that Leon did some more remixes under the Subsphere guise, e.g. for Questia's Nexus Asia and Crystal Clouds on the A State of Trance label and Azior's Sunset at Myvatn on the Green Martian label.

A solo release followed, and that was the first of many to follow. Tracks by him are and will be released by companies like Armada Music, Blackhole Recordings, Spinnin Records, Bonzai Music, Captured Music and FTM Records under the Subsphere, Mindsensation and Precursor guises to name a few, and off course under his own name..

Records by him have been played by jocks like Tiesto, Armin van Buuren, Judge Jules, Marco V, Paul Oakenfold, John Digweed and more. Beside his debut release on Green Martian, Subsphere - Infinite, became record of the week on the trance website.