Woodwind is a type of musical instrument that produces sound by blowing air through a tube. The term woodwind refers to a group of instruments that are made of wood and use a reed or a double reed to produce sound. One example of a woodwind instrument is the OBOE, which has four letters. The OBOE is a double-reed instrument that produces a mellow, reedy sound. It is commonly used in classical music, jazz, and other genres.