SOUND BOUND is an interactive graphic equalizer. It displays the magnitude of frequency akin to traditional graphic equalizers or other sound visualizers, and it also allows the user to distort and create sounds by touch interaction. The user can create virtual balls or instrument icons on the screen and can cause these objects to collide with the equalizer by using a physics engine. When virtual balls collide with the equalizer bars, the magnitude of certain frequencies is amplified. When equalizer bars strikes an instruments icon, it create an instrumental sound effect. Until the invention of SOUND BOUND, the activities involved in listening to music have been essentially passive and static. SOUND BOUND actively engages people in the activity of listening to music and enhances their experience as well.