character: Dr. Lee
topic: The Science of Music and Sound Waves
grade: 9
subject: Physics
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character: Mr. Smith
topic: Acoustics and Wave Properties
grade: 9
subject: Physics
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character: Ms. Chen
topic: The Physics of Musical Instruments
grade: 9
subject: Physics
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character: Dr. Patel
topic: Wave Interference and Sound Quality
grade: 9
subject: Physics
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