The most fundamental musical instrument is something that everyone has: the human voice. The voice is a valuable, intuitive, and easy to use tool for understanding music, as well as the "voices" of other instruments. In this section, you will be given some basic information on the physiology of the voice. Additionally, you will be provided with resources on the construction of musical instruments. Finally, this section provides resources not only on European instruments, but on other instruments from around the world as well.