Anechoic Chamber - An extremely quiet room designed for acoustic research.
John Cage - One the foremost American composers in the 20th century (1912-1992)
Cymatics - Visual study of vibrational phenomena, after the Greek word Kyma
Idiophone - Instrument that produces sound through its own vibration (e.g. cymbal)
Membranophone - Instrument that produces sound through a vibrating membrane (e.g. snare drum)
Katajjaq - Inuit throat singing
Sabar - Senegalese and Gambian drum, typically played with one hand and one stick
Gamelan - Indonesian style of music, mainly played on metal percussion
Tabla - Indian double drum

-Also written as C (common time), time signature of four quarter notes per measure
Sharp - Accidental that raises a pitch by a half step
Flat - Accidental that lowers a pitch by a half step