Animal Collective is an American experimental pop band formed in Baltimore, Maryland. Its members consist of Avey Tare (David Portner), Panda Bear (Noah Lennox), Geologist (Brian Weitz), and Deakin (Josh Dibb). The band's work is characterized by an eclectic exploration of styles, including psychedelia, freak folk, noise, and electronica, with the use of elements such as loops, drones, sampling, vocal harmonies, and sound collage. AllMusic's Fred Thomas suggests that the group "defined the face of independent experimental rock during the 2000s and 2010s." The band members met in school and started recording together in various forms of collaboration from a young age. In 1999, they established the record label Paw Tracks, issuing what is now considered their debut album, Spirit They're Gone, Spirit They've Vanished (2000), as well as work by other artists. The band's 2007 album Strawberry Jam was their first to chart on the Billboard 200. Their 2009 follow-up Merriweather Post Pavilion was the band's most commercially successful album, reaching #13 on the US chart; its reverb-heavy psychedelic pop sound proved highly influential to independent music of the subsequent decade. Records released under the name "Animal Collective" may include contributions from any or all of its members. Evolving from early collaborations between Lennox and Portner, the collective was not officially established until all four members came together for the album Here Comes the Indian (2003). Most prior collaborations between the band members were then retroactively classified under Animal Collective's discography. In the case of Dibb, who often takes breaks from recording and performing with the band, his time off does not constitute full leave.