Dutch producer, engineer, songwriter and remixer. In 1984 he met [[artist:105938]] and started to produce with him at [[label:1342150]]. Around 1989, after van Verseveld started more and more to drift into House and Techno music, Hartman started other cooperations and continued his production activities like co writing T Spoon's No Time To Waste, producing an album with Room 42 incl 3 hitsingles, and produced a lot of Techno House like The X and Anthrophia During the 1990's he more and more concentrated on engineering and recording activities. Later, he was engineering at the famous [[label:264312]].

Was active with a lot of Chill Out projects and since 2022 ran the record label Random Vinyl along with 'partner-in-crime' Arnoud Aalbersberg. The label focussed on re-releases of hard to get Dance Classics. Marc sadly passed away on 08/21/2024.