The band consists of Michael Angelakos (lead vocals, keyboards), Ian Hultquist (keyboards, guitar), Ayad Al Adhamy (synthesizer, samples), Jeff Apruzzese (bass, synth bass), and Nate Donmoyer (drums). All of the band members, with the exception of Angelakos, attended the Berklee College of Music in Boston. The band culled their name from the Variety Slanguage Dictionary, a glossary of Variety's frequently-used slang, which was provided by the Hollywood Insider publication to help not-so-savvy readers decipher its content. The magazine used the term to refer to drive-in theatres, because of their privacy and romantic allure for teenagers. The band shares its name with a pornographic film made in the 1980s, starring Traci Lords. Members of the band say they have been asked repeatedly if that film is what inspired their name but they weren't even aware of its existence until the year after their formation. The first Passion Pit songs, which would later become the Chunk of Change EP, were written by Angelakos as a belated Valentine's Day gift to his then-girlfriend. At first, he wrote and performed all his material alone using a laptop. After one of his solo shows in the Boston area, Ian Hultquist, who was attending Berklee at the time, approached Angelakos and expressed interest in creating and playing music collaboratively. They formed a group that consisted of Angelakos, Hultquist, Ayad Al Adhamy, Thom Plasse (bass), and Adam Lavinsky (drums). The band spent a considerable amount of time trying to flesh out a collaborative format and structure that would work best for them. Jeff Apruzzese and Nate Donmoyer joined the band shortly after they signed to Frenchkiss in 2008, replacing Plasse and Lavinsky, respectively.