Assertion: flute's part | /r/HasProperty | written for an octave range
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Source sentences:
text: Using a form of additive synthesis, the player was allowed to change between types of overtones with a key switchable between fundamentals of G, Bb, C, Eb, and F (allowing the instrument to be used to play transposed parts written for saxophones, trumpets, etc.) and an octave range that could be switched between low, medium, or high.