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| Woodwind instrument | |
|---|---|
| Hornbostel–Sachs classification | 422.112–71 (Double-reeded aerophone with keys) |
| Developed | eighteenth century |
| Related instruments | |
The semi-contrabassoon (also called quint bassoon, semi-contra or half-contra) is a double reed woodwind instrument pitched between the bassoon and the contrabassoon. It is pitched in either F (quint bass) or G (quart bass) a fifth or fourth, respectively, below the bassoon.[citation needed] The cantata Nach dir, Herr, verlanget mich, BWV 150, by Johann Sebastian Bach requires a bassoon in A, lower by a minor third than the ordinary bassoon.[1]: 317