French horn
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The horn is a brass instrument in the horn family, made of tubing wrapped into a coil with a large flared bell and rotary valves. The term French horn refers to horns with piston valves, seldom used t
A modern double horn
The valves of a Conn 6D double horn. The three lever keys (above the large valves) can be depressed toward the large outer tube. The thumb key (near the left-most valve) moves inward toward the three finger keys.
A natural horn has no valves, but can be tuned to a different key by inserting different tubing, as during a rest period.
Vienna horn
Clarinet
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The clarinet is a single-reed musical instrument in the woodwind family, with a nearly cylindrical bore and a flared bell.
Two-key clarinet with fingering chart, from Museum musicum theoreticalo practicum, 1732
Sketch of the basset clarinet used by Anton Stadler since 1789 and a replica
Tone holes - countersunk and straight
Early Clarinet with 4 keys (c. 1760).