You're the Best was performed by Joe Esposito and became famous as the soundtrack to Daniel LaRusso's tournament run in The Karate Kid from 1984, after originally being written for another boxing film. Its upbeat, motivational chorus made it a natural shorthand for training and triumph, and it later spread through sports edits, workout videos and internet memes that reuse the climactic moment. Because the song is so closely tied to an underdog victory, creators still reach for it whenever they want an instant, recognisable feel-good finish.