Ravana cuts these heads off and offers them to Shiva. He uses one of his heads and one of his hands to create a lute or veena. The head serves as the gourd of the lute while his hand serves as its beam and his nerves serve as its strings. This is the Rudra-veena, the lute that is offered to Shiva. It is also known as Ravan-haath, the hand of Ravana, and it is the inspiration for all stringed musical instruments of the world.