"Believe" was the second single from The Chemical Brothers 2005 studio album Push the Button. The single was released in early May 2005 and peaked at #18 in the UK Singles Chart. Kele Okereke, lead singer and rhythm guitarist of the indie rock band Bloc Party is featured on vocals. A remix of the song was featured in the 2005 snowboarding video "Flavor Country" by Sandbox.

John Bush from AllMusic described: "[The song] agonizing over an energized electroshock production composed of equal parts Prince and Chicago acid house."

While reviewing Push the Button, Robert Christgau called the song along with "The Big Jump", "rock the block."Thump, "an electronic music and culture channel" from Vice, listed the song as one of the duo's fifteen best collaborations, ranked at number 12.Rolling Stone's Bill Werde called the song "a club-anthem-in-waiting," "the urgent yelp" from Okereke while delivers the line "

The video was premiered on MTV on March 18, 2005. The music video for the song was directed by Dom and Nic, contains scenes filmed at the now defunct MG Rover Longbridge plant now owned by SAIC . It starts out with a man watching women in an exercise video dance on a window TV in a store, possibly spoofing the then-recent video for Eric Prydz's single "Call On Me". The man turns out to be a paranoid factory worker terrified of the automated assembly robot he operates, possibly under the influence of hallucinogenic drugs or possibly painkillers, as he has a cast on his left arm.

...
Wikipedia