Great Day comes from The Lonely Island, the comedy music trio made up of Andy Samberg, Akiva Schaffer and Jorma Taccone, whose songs mix catchy pop and hip-hop production with deliberately silly lyrics. The track's sunny, optimistic hook makes it easy to lift out of context, and short clips of it have circulated on soundboards and in short-form videos as a shorthand for a good day or a happy ending. Because the feeling is instantly clear, even without knowing the full song, it continues to work as a quick, upbeat payoff for creators.