Defend your city from an attack of the tones! The noise bombs will blast away your buildings in a hail of fire and debris. Fire back a matching tone to vaporize the incoming notes. Tone Defense is a unique action game using tone selection to defend against the bombs. Each level adds a new sound and is a fun way to learn how to differentiate between different tones. The game can be used as a learning aid to assist in tone recognition for playing musical instruments.