Movie legend Gene Kelly was a perfectionist who often used the environment as a musical instrument. In the film 'Summer Stock,' Kelly performed a solo dance routine using a newspaper and a single squeaky floorboard. Kelly spent days testing the stage to find a floorboard that produced the exact 'musical' squeak he needed for the rhythm of the piece. When the wood wouldn't cooperate during filming, he had the sound engineers record various squeaks and pitch-shift them to match his choreography. This turned a common building flaw into a rhythmic instrument, proving that a movie legend's greatest tool is their ability to find music in the mundane. The routine is still studied today as a masterpiece of foley-integrated choreography, where the set itself becomes a member of the orchestra.