Delirious? (formerly known as The Cutting Edge Band) were an English contemporary Christian band. For the majority of their career, the lineup featured Martin Smith on vocals and guitar, Stu G (full name Stuart Garrard) 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.

Delirious?' 1994 song "I Could Sing of Your Love Forever" has been called a "modern worship classic". Other well-known songs by the band include "Did You Feel the Mountains Tremble?", "Rain Down", and "Majesty".

The Cutting Edge Band had various members from 1992 to 1996, before becoming a full-time band with an established lineup and renaming themselves to Delirious?. From 1997 to 2001, the band focused on a mainstream audience, with several singles reaching the top-twenty in the UK. The band shifted towards CCM from 2003 to 2009, although occasional singles were still released.

During their final years, Delirious? began to focus on humanitarian issues in their music, and Martin Smith and Stu G started charities. Drummer Stew Smith left the band at the end of April 2008, and in a press release in July that same year, it was announced that the band would embark on an indefinite and possibly permanent hiatus. Delirious? performed their final concert in November 2009.