Delirious? were an English contemporary Christian band. For the majority of their career, the lineup featured Martin Smith on vocals and guitar, Stu G on guitar and backing vocals, Jon Thatcher on bass guitar, Tim Jupp on keys and piano, and Stew Smith on drums and percussion. Paul Evans took over as drummer for the band's final two years.

Mezzamorphis is the second studio album by Christian rock band Delirious?. Released in 1999, it represented a large step towards a more electronic sound for the band and received a huge critical acclaim.