Kwartz has been played over 10 times on NTS, first on 12 May 2015. Kwartz's music has been featured on 13 episodes.

Kwartz is the stage name of Mario Campos, born in Madrid in 1989 and now based in Berlin.

In late 2011 and after publishing several EP’s in different international labels, Kwartz's productions began to draw the attention of the leading names in the international scene, so in 2013 Exium released a split EP with him called Fenomen, which was his first release on vinyl.

In late 2013 Kwartz joined PoleGroup and became part of the booking roster of the label commanded by Oscar Mulero, where…