NW Circles is a free MIDI generator that turns circular motion into evolving musical patterns. It's built around a system of rotating circles and trigger points that lets you create rhythms, melodies, and textures in a fun, visual way.

It lets you shape your sound with a range of little sliders for speed, probability, octave shifts and other note behaviors. Fine-tune how often notes play, how long they last, and how much variation is introduced.

It also features a bass layer that produces sustained notes based on your dot placements, with its own probability and timing controls.

There is no full version, Circles ships free, forever.

1. Copy & paste NW Circles.vst3 from the ZIP-file to your VST3 folder
2. Launch your DAW and rescan VST3 plugins.
3. Have fun.

More information on the Gumroad page.