Voltage Modular 2.9.x patch.

Simple mono drone synth with random bandpass filtering based on the Random Harmonics 1 patch. The pitch can be set from the keyboard, otherwise this thing just goes.

The core is an Additive Oscillator whose partials are each modulated by a random LFO slew limited using the Glide module. The Additive Oscillator is fed to four bandpass steiner-park VCFs (Vult Tangents) each modulated in the same fashion.

The output is split into two channels with a delay per channel, followed by the Universe 3 reverb (free and highly recommended).