Category:Bass oboe

bass oboe 

double reed instrument in the woodwind family
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Subclass of	oboe family instrument transposing instrument single oboes with conical bore
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Bass oboe or baritone oboe is a double reed instrument in the woodwind family. It is about twice the size of a regular (soprano) oboe and sounds an octave lower; it has a deep, full tone not unlike that of its higher-pitched cousin, the Cor anglais (English horn).

The bass oboe is notated in the treble clef, sounding one octave lower than written. Its lowest note is B₂ (in scientific pitch notation), one octave and a semitone below middle C, although an extension may be inserted between the lower joint and bell of the instrument in order to produce a low B-flat₂. The instrument's bocal or crook first curves away from and then toward the player (unlike the bocal/crook of the English horn and oboe d'amore), and looks rather like a flattened metal question mark. The bass oboe uses its own double reed, similar to but larger than that of the English horn.