Sabada John Kiffmeyer kaluar ti grup musik Sweet Children, Billie Joe Armstrong, jeung Mike Dirnt ngarékrut Tre Cool pikeun jadi drummer, terus ngaran Sweet Children diganti jadi Green Day. Tre leuwih milih kaluar ti sakolana lantaran tuntutan profési. Bapana Tre ngadukung pisan kana naon anu dipilampah ku anakna, malah mah nalika tur di Yilu tempat anu béda, Bapana anu nguruskeun ngeunaan transportasina. Kieu koméntar Bapana ngeunaan Green Day:
I watched them go from a bunch of kids to a group of musicians with work ethic. On their first tour or two, it was more of a party than anything else. I still scratch my head and say, 'How in the hell did they make it?' They used to practice in my living room here – a lot of the songs they did on Dookie. You hear it coming together, and you don't expect people are going to go out and buy it. But when it does, you just say, 'Wow that's so cool.'