SpaceTheremin for PC and Mac

1. A theremin is a device that uses a pair of antennae to control the pitch and volume of a sound.

2. As a virtual theremin, this app uses the X and Y axes to control pitch and volume.

3. SpaceTheremin supports alternate waveforms such as sine and square, and has vibrato and modulation for a richer sound.

4. To start making sound, pick the settings you'd like to use and click "Start".

5. SpaceTheremin is a virtual theremin that can be controlled via the mouse or touchscreen.

6. Pitch goes up as you move to the right, and volume increases as you move up.

7. To stop sound generation, click the button again.