When you first start Buzz, you'll see a mostly blank screen with a box in the center that says "Master." This is the machine view. From this view you can add, connect, edit, disconnect, and delete machines from your song. A "machine" can be many things: an instrument, an effect, an input, an output. The point is, Buzz works entirely on the metaphor of creating and connecting machines. When those machines connect to the Master machine, their output is sent to your speakers. So, at a minimum, to get any sound you need at least one instrument connected to the Master!
