character: Dr. Alan Brown
topic: Acoustics and Instrument Design
grade: 9
subject: Physics
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character: Ludwig van Beethoven
topic: Sound Production in Music
grade: 9
subject: Physics
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character: Galileo Galilei
topic: Fundamentals of Sound Waves
grade: 9
subject: Physics
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character: Leonardo da Vinci
topic: Early Concepts of Instrumentation
grade: 9
subject: Physics
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