The Technology:

We borrowed an Xbox Kinect from the lending library to sense when the participants sit down or stand up, along with the Xbox SDK and Microsoft Visual Studio to develop our software. 

The program is written in C#, and uses the gesture recognition software to detect the gesture of sitting. Our code's output shows the participant's frames, for up to 6 people, and can detect with some level of confidence whether or not the person is sitting. 

We used the Windows Music Player from the code in order to start playing the music; one player that is shared among all six participants that can start and stop a piece of music that is local on our device. We chose a neutral song with multiple tones, so that we could distinctly tell when the music restarts.