John Kiffmeyer (aka Al Sobrante) was the original drummer for Green Day; playing in the band since they were named Sweet Children. He was also in the band Isocracy, a well-respected band in the 924 Gilman scene. His prior work gave Green Day some credibility within that scene. He eventually decided to focus on his educational endeavors and quit the band to become a full-time college student. He was featured on the bands first releases: 1,000 Hours, Slappy, 39/Smooth and the Sweet Children EP.

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