Kari Kalliala is an alias of the Drone Music studio for minimalist electronic pieces using only a handful of sine-wave oscillators. Tones are tuned in just intonation, so the intervals lock together without beating, and then one oscillator is moved very slowly to introduce controlled interference.
The music is precise and transparent, almost clinical in sound, and highlights how small changes in tuning alter the perception of a chord. Volume should stay modest, since pure tones can feel more intense than their level suggests. Headphones make the interference patterns between the oscillators easiest to hear.
