The OBOE is a double reed instrument of about 60cm long. The sound of an oboe is reedy and rather plaintive in tone and is very good at sad tunes. It is not use constanly in the orchestra. This instrument has a very expressive, meloncholic voice. The clarinet is a transposing instrument which are the B flat and A flat clarinet.
Clarinet are nearly agile as the flute but their tone is fuller and more powerful.
The bass clarinet looks something like the saxophone and the tone is very rich and velvety. It is not a regular instrument in the the orchestra. The bassoon is the bass in the woodwind instrument. Each notes has its own tone quality and the lower register is rather dry and gruff, often used for comic effects. Its very deep voice is used to reinforce the bass and only used in a fairly large orchestra.