It's a machine, like a jukebox, but it generates its own techno music, and measures audience participation via radar.
" Through its dance activity radar, the International Dance Party detects and evaluates motion input from surrounding people in realtime. Several sophisticated transforming mechanisms let the flightcase turn into a powerful and boosting party machine, once the visitors start to dance within the machine's range of perception.
The audience controls the complexity of the generated music and the intensity of the light effects directly by the energy of its dance action. When there is no audience, or when the audience is not active enough, the machine stops its performance and transforms back into a transport crate."