Twenty One Pilots were formed in 2009 by high-school friends Tyler Joseph, Nick Thomas, and Chris Salih. The pop trio built an enormous regional following across Ohio and the Midwest, spurred on by constant and energetic touring, shrewd use of interactive social media, and connecting with fans on a grassroots level. Twenty One Pilots self-released their eponymous debut album of rap-infused high-tech pop in December 2009 before Thomas and Salih left the band in 2011; Tyler Joseph carried on with new member Josh Dun. Later that year, second album Regional at Best surfaced, the f...