One of the most iconic songs to come out of cinema is John Williams' haunting score to Jaws, but apparently, Spielberg was not a fan of it at first. When Williams shared his idea with him and kept playing those two notes, the director thought he was joking. To be fair, the score doesn't sound like much when it was just played on the piano. But eventually, Spielberg warmed up to it, and the song was forever burned into the minds of audiences everywhere.