John de Wit, aka White Mash is a Dutch producer.
Started making recordings back in the 1990s, his material is experimental electro, with underlying industrial, rap, alternative rock and even heavy metal elements. His skill is in finding synergies between these seeming disparate genres. He has collaborated with a wide range of different artists in recent years. NWA, the Crystal Methode, the Red Hot Chilli Peppers and Rage Against the Machine are among his key influences.