The term 'wood wind instrument' refers to a type of musical instrument that produces sound by blowing air through a reed or tube. The most common example of this type of instrument is the OBOE, which has four letters. The OBOE is a double-reed woodwind instrument made of wood or plastic, with a conical bore and a flared bell. It is typically played with a single reed, and is used in orchestras, concert bands, and jazz ensembles.