Hyperbass flute

Extremely low-pitched musical instrument in the flute family

The hyperbass flute is conceptually the largest and lowest-pitched instrument in the flute family, although it is extremely rare. It first appeared at the turn of the 21st century, and only two are known to exist. With tubing reaching over 8 metres (26 ft) in length, it is pitched in C, four octaves below the concert flute (three octaves below the bass, two below the contrabass, and one octave below the double contrabass). Its lowest note is C0, one octave below the lowest C on a standard piano, which at 16 hertz is considered at or below the threshold of human hearing.

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