This video emerged from some random knobbing with the Behringer Systems 100 & 2500 that I put into the rack again.
The faster sequenced voice uses the 2500 sequencer, seq. switch, vco, and Filtamp. Two tracks from the sequencer are passed through the seq. switch to achieve a 16 step sequence (gate 8 advances the seq. switch). The FiltAmp receives a second input from a resonating Sys100 filter (sine wave), which is not sequenced.
The second voice uses three System 100 VCOs, where two just drone. The third one is sequenced with the 182 sequencer, which is advanced by the third track of the Sys 2500 sequencer (using the cv as a step trigger). After VCF'ing, the Sys 100 sound goes through the 172 phase shifter. Strymon Volante adds FX (tape delay & spring reverb).

Thanks for watching, happy holidays!