No, saxophones are aerophones. Membranophones, generally speaking, are percussion instruments; their sound comes from the vibration of a membrane that is struck. Aeropho
…nes are instruments whose sound is created by a column of air that vibrates inside the instrument. Most of the instruments we think of as band instruments (flute, tuba, etc.) are aerophones, as are natural wind instruments like conch shells. Interestingly, the kazoo is a membranophone. It uses an existing sound (the human voice) and modifies it by passing it over a vibrating membrane. Go figure. Membranophone and aerophone are two of the classes of musical instruments on the Hornbostel-Sachs system. http://en.wikipedia.org/wiki/Hornbostel-Sachs (MORE)