A certain aerophone is a type of musical instrument that produces sound by the vibration of air. The two examples of this type of instrument are the OBOE, which has four letters, and the tenorsax, which has eight letters. Both instruments are woodwinds, meaning they produce sound when air is blown through a reed. The OBOE is a double-reed instrument, while the tenorsax is a single-reed instrument. Both instruments are commonly used in orchestras, jazz bands, and other musical ensembles.