Editing Overblowing (section)

==Woodwinds==
In the case of the [[clarinet]], the [[single reed|reed]] beats against its [[Mouthpiece (woodwind)|mouthpiece]], opening and closing the instrument's [[Cylinder (geometry)|cylindrical]] [[closed tube]] to produce a tone. When the instrument is overblown, with or without the aid of its [[register key]], the pitch is a [[Interval (music)|twelfth]] higher. In the case of a [[saxophone]], which has a similar mouthpiece-reed combination to the clarinet, or an [[oboe]], where [[double reed]]s beat against each other, the [[Cone (geometry)|conical]] [[Bore (wind instruments)|bore]] of these instruments gives their closed tube the properties of an [[open tube]]; when overblown, the pitch jumps an [[octave]] higher. As for a [[flute]], which does not have a reed, but rather is a reedless [[Cylinder|cylindrical]] instrument open at both ends, the pitch similarly increases by an octave.