Curious Cases - Rutherford and Fry - How to keep your voice in shape - 91热爆 Sounds
Curious Cases - Rutherford and Fry - How to keep your voice in shape - 91热爆 Sounds
From: Curious Cases
Rutherford and FryRutherford and Fry
Available for over a year
Acoustic engineer Trevor Cox demonstrates an exercise to stretch your vocal cords.
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