Mash biography. Mash the dj/producer/label owner/radio broadcaster aka Martyn Henderson has been djing for 17 years and has released various tracks on labels like Dirt Crew, Def Drive, Blue Black, Glasgow Underground and his own Tracktion and Distracktion labels which have been played by the likes of DJ Sneak, Freaks, Switch, Basement Jaxx, Funk D Void, Slam, Laurent Garnier, Mish Mash, Freeform Five, Mylo, Rob Mello, Stuart Patterson, Slam, DJT, Harri and Jonny Fiasco to name but a few.