A quick idea using the great site inBflat.net which is an online project that got people to film themselves performing simple drones in the key of Bflat and then allows the viewer/hearer to turn them on and off at will. Everything sounds nice because its all in the one key. I opened this up on my electronic whiteboard and then gave kids a chance to come up and experiment and create little arrangements. Its a great little site that enables the kids to instantly hear what it is like when you add a bass, or how the sound changes when a single note instrument like a trumpet comes in. It is also a great chance for them to hear music making using non traditional instruments and instruments that they might never have seen before.