The clarinet, flute, oboe, bassoon, coranglais, saxophone and chalumeau are wood wind instruments. The most popular wood wind instruments are the flute, clarinet, oboe and bassoon.
Most of these instruments are double reed instrument except for the clarinet and the saxophone and the flute does not have a reed. The clarinet has many keys compared to the flute and oboe. It is also one of the easiest wood instrument to learn. The oboe and bassoon are the hardest to learn. The clarinet transposes.
For example, the fingers put on the lower part of the clarinet produce the Bb note, the F note is also produce at the same position if the clarinet is blown harder.