potential ideas

Idea one: 'band on the streets' fundamentally a band loaded into a truck, and it drives around to places with lots of people and plays a 'flash gig' of about two songs, then leaves. and does it somewhere else.

Idea two: 'interactive dance floor' a dance floor, which acts similarly to the reactable, in that people dance upon it, and each step makes a note, this note is determined by the size and shape of the shoes the person is wearing, and people could have shoes with shapes on the soles, to create different instruments, and as more people dance, the music gets more complicated.

*another variation a person controls what points n the dance-floor produce which sounds, in a sense conducting the music that s produced.

Idea three: a flash Choir, possibly singing massive works in big spacious places like train stations etc. ( this idea doesn't really have much scope for intricacy, but could still be fun)