Andy Ernst, (also known as Andro Ernst), is a music producer, engineer, musician, songwriter, from San Francisco. Artists he has 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. Ernst owns and operates the Art of Ears Studio in Hayward, California, previously located in San Francisco.
Ernst was the lead singer/guitarist/songwriter for the band Diabolical Exploits (2001), whose songs appeared in MTV's Jackass Vol. 2 DVD, and performed with AFI and Tsunami Bomb. He was also a member of Sass (1976), The Stats (1980), and Andro & Ross (1989). As a member of Sass, he has performed in concert along with Lionel Richie & The Commodores, Greg Kihn, Malo, Esther Phillips, Huey Lewis & Clover, The Main Ingredient, Brass Construction, and Tower Of Power.