character: Mr. Harmon
topic: Understanding Sound Waves
grade: 9
subject: Music
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character: Ms. Melody
topic: The Science of Frequency
grade: 9
subject: Music
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character: Dr. Tempo
topic: Exploring Wave Properties in Music
grade: 9
subject: Music
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character: Professor Rhythm
topic: How Frequency Affects Pitch
grade: 9
subject: Music
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