Steve Soto—best known as the co-founder of seminal punk groups including the Adolescents and Agent Orange—has died. His death was confirmed by surviving member Tony Reflex on the Adolescents’ Twitter account. Soto was 54 years old. A multi-instrumentalist, Soto founded the Adolescents in 1980 alongside Tony Reflex, Frank and Rick Agnew, and Casey Royer. He and Reflex led the group in the following decades, releasing multiple studio albums over the years. The band recently wrapped a run of U.S. tour dates. Their last full-length Multiple Density was released in 2016.