

Violet Tests Three Mouthpieces for Blowing Balloons (MP4 - 720p)
Violet has several mouthpieces that she wants to test for comfort and effectiveness. She has chosen the CTI 12" round balloon for its above-average inflation pressure, and a lip-ring spirometer mouthpiece, a trombone mouthpiece, and a tuba mouthpiece. She also blows a fourth balloon without a mouthpiece as a control. Which will her lips prefer?
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