We are proposing an interface that will take physical cues from the user to affect the music playing in the environment.

Our initial plan is to embed a "handle" type of tangible device, tentatively a rubber squeeze ball, with pressure and light sensors so
that each action the user performs -- squeeze, cover, etc -- will be
recognized and cause a change to continuous music playing in the
environment. The direct mapping between each physical interaction and
its effect will not be evident, but it will be consistent so the user
can discover appropriate patterns and experiment with the music
accordingly. The light sensor would perform the additional function of
changing the music to adjust to the amount of light in the room (and
therefore the user's mood).

This system can be used for many applications. To name a few: for toying with elevator music, for educating babies/infants on cause and effect through audio feedback, for soundscape managing of real and virtual worlds