The song features the sound of a crowd at a gig. Patterson Hood told Uncut
: "I decided that 'Let There Be Rock' needed to be the breakthrough '70s hit from this fake band, Betamax Guillotine, so it had to sound like one. I've always loved the applause on 'Bennie And The Jets
' and wanted something like that on this song. So when we were mixing the record, I bought in my vinyl copy of Cheap Trick at Budokan
and lifted two different crowd swells. The really big one kicks in when the guitars get going."