Jason Relva is thanked in the liner notes of "1,039/Smoothed Out Slappy Hours" and "Kerplunk". In 1991, he worked as executive producer for Green Day album "Kerplunk". Another game has also been released known as KerPlunk 2. Quit opened for Green Day during their Kerplunk tour. Along with the successful live shows, major labels took notice of "Kerplunk"'s phenomenal popularity. Carr returned to Chicago in 1907 and worked with Watson on the Kerplunk experiment. Despite originally being written in 1992, around the time that "Kerplunk" was released by Lookout! Cool made his debut on Green Day's second album, "Kerplunk" (1991). The band's second studio album "Kerplunk" sold 50,000 copies in the U.S. Carr collaborated with John B. Watson on his most well-known project&colon; the famous Kerplunk experiment. "Kerplunk" was banned from certain stores because of the cover art.