Mark Sixma made his first notable trance music production with Def Tactical whilst also releasing a Project 6 E.P at Five AM Records.
This was followed up by a release called Destination 6 and received 'Tune of the Week’ status on Armin van Buuren’s radio show, A State Of Trance.
[1] His next single led him signing up to record label Armada Music, 'Fade 2 Black' made him once again earn a 'Tune of the Week' status on A State Of Trance.
[2][3] Armin van Buuren has selected Sixma's tracks for his annual A State Of Trance compilation for three years.
[8] He also remixed the iconic song called 'Adagio for Strings' in which was supported by many artists like Armin van Buuren, Markus Schulz, Cosmic Gate and Andrew Rayel.