Musical masterpieces

Speaking of legendary works of musical talent, in a hundred years, when copyrights expire (assuming they ever do), which songs from our generation will people still be humming? What will be the new Beethoven's Fifth or Nutcracker suite? The Star Wars themes? My Heart Will Go On? The Simpsons theme song? I really couldn't tell you. When some holographic film recreates the 90s and the 2000s, what songs will they play to set the tone?