Bullroarer - Nhạc cụ cổ đại

The design is inspired by an ancient Greek bullroarer.

Instructions:

• Cut a piece of string that is at least 50 cm long.
• Take one end of the string and tie a knot around the bullroares hole. Ensure that the knot is tight with no clearance in between, as this will provide a secure grip.
• Hold the end of the rope, lift your Hand upward to create tension in the string and perform an abrupt circular motion with your hand. 
• This action will set the bullroarer into motion, generating sound