Los Campesinos! formed in Cardiff in 2006 and All Hell is their seventh full-length release following Hold On Now, Youngster… (2008), We Are Beautiful, We Are Doomed (2008), Romance is Boring (2010), Hello Sadness (2011), NO BLUES (2013) and Sick Scenes (2017). The band consists of Gareth (vocals), Tom (lead guitar), Neil (guitar), Kim (vocals, keys), Rob (keys), Jason (drums) and Matt (bass).