Kenneth swings the microphone, preferably in a precise trajectory. Külli recites random numbers, preferably with optimal timing.
The sound is run through a delay effect, which later on morphs into a comb filter effect, tuned to various chords in A minor.
Requires MiniBeeUtils and movement sensors. We use MiniBees, but with a bit of rewriting the MiniBeeUtils should work with any sensor data. See the full gitlab repo for more details on implementation.