Day 'n' Nite was Kid Cudi's breakout single, first appearing in 2007 online and released commercially in 2008 before featuring on his debut album Man on the Moon. Its Crookers remix helped it cross into dance clubs, while the original's simple hook made it easy to recognise from just a few seconds. Online, short loops of the chorus were reused in edits, remixes and meme videos, where the day and night contrast became shorthand for insomnia, overthinking and working or scrolling long after everyone else has gone to sleep.