I Gotta Feeling was released in 2009 by the Black Eyed Peas and quickly became a global party anthem, topping charts around the world and soundtracking clubs, weddings and New Year celebrations. Its optimistic, dancefloor-ready sound made it a staple of feel-good moments in film, advertising and live events. Years later the intro alone still works as cultural shorthand, instantly signalling fun, friendship and a night out, which is why creators keep reaching for it to open celebration videos and party edits on social media.