Andy Ernst, aka Andro Ernst, is a music producer, engineer, musician, songwriter, from San Francisco. Artist’s he's worked with include: Green Day, AFI, Sway & King Tech, Rancid, Tiger Army, The Nerve Agents, Malo, Link 80, Screeching Weasel, Swingin' Utters, Screw 32, Good Riddance, Fury 66, Shock G and Money B. The majority of his work has been punk rock.