East Hundred formed in 2004 as a recording project with brothers Brooke and Will Blair and Brooke's then-girlfriend Beril Guceri. They released their first self-titled EP in late spring of 2005. Soon after, they invited bassist Dave Sunderland and keyboardist Susan Gager to join the live act. The trio continued to write and record and in February 2007 they released Copper Street Performer produced by John McEntire. In April 2008, the now five-piece began recording what would become their first full-length album Passenger with Brian McTear of Miner Street Studios. During this time the band experienced inner turmoil as Blair and Guceri ended their relationship.