The Wedding Singers - S1.E10

As a favor Sarah gets SlipDog to play at her friend's wedding. Then someone else hires them to play at another wedding. Soon SlipDog has acquired the alias Happily Ever After which they use to perform at numerous weddings and parties in between gigs because the money is so good. The band members even wear blue tuxedos and gowns. Doc objects constantly, especially after the band forgets about a gig to play at a wedding instead.