Ernie Ball

Greenday: Billy Joel Armstrong, Mike Dirnt, Tre Cool at the 2016 American Music Awards held at Microsoft Theater on November 20, 2016 in Los Angeles, California

WATCH: Green Day's Mike Dirnt Gives Incredible Advice to Aspiring Musicians

Green Day bassist Mike Dirnt is the focus of the latest episode of “String Theory,” Ernie Ball’s web series that tells the story of how different musicians found their sound.
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