Why is the term Roger Wilco considered by some to be an incorrect phrase - trivia question /questions answer / answers
Aerophones; any class of musical instruments in which a vibrating mass of air produces the initial sound including bull roarers and sirens. They are found in many countries throughout Africa and are normally incorporated with dancing, the musicians having to synchronize their footwork along with playing their notes!
1 Idiophones are musical instruments in which a vibrating solid material is used to produce sound. 2  Membranophones are musical instruments that have vibrating stretched membranes or skin that produce sound.  Aerophones are musical instruments which produce sound by a vibrating mass of air.