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December 17, 1991 (original release)

Kerplunk is the second studio album by American punk rock band Green Day, released on December 17, 1991 by Lookout! Records.Kerplunk was Green Day's last release on the Lookout Records label, and was also the first album to feature Tré Cool on drums. The album sold 10,000 copies its first day and became Lookout!'s biggest selling release. After debuting it to their fans in the Berkeley, California area and receiving much approval from the critical 924 Gilman Street crowd, the band packed up in a cramped, converted Book Mobile and headed east. Green Day developed a fan base on the east coast, behind the determined grass root efforts of lead singer, Billie Joe Armstrong. The opportunity paid off as album sales reached over 50,000 copies. Along with the successful live shows, major labels took notice of Kerplunk's phenomenal popularity, as a result, many approached the band. Green Day realized that they had outgrown their record distribution capacity with Lookout! and eventually signed with Reprise Records. With Reprise, Green Day recorded and released their next album Dookie (1994). The album officially includes only 12 tracks, but the versions released on CD and cassette also include the 4 tracks from the Sweet Children EP. One of those tracks is a cover of The Who's "My Generation".

In August 2005, Green Day pulled the album, as well as all of their other material released through the Lookout! label due to unpaid royalties. It was reissued on CD by Reprise Records, who Green Day has been with since leaving Lookout!, on January 9, 2007. In Europe, the album was released by Epitaph Europe, and has remained in print. It was reissued on vinyl on March 24, 2009 by Reprise Records and includes a reissue of the Sweet Children EP. There were no official singles released from the album, although "2000 Light Years Away" and "Christie Road" were released as mock-up singles in a Green Day singles box set entitled Green Day: Ultimate Collectors. As of November 2013, Kerplunk has sold more than 1,000,000 copies in the United States and more than 4,000,000 copies worldwide. The album has gone on to be among the best selling independently released albums of all time.

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