Back surdo (L for low, H for high) R/L: accented note (right/left hand suggested * : trill, generally three very fast notes on repique/caixa, two or three for surdos Add schematic, start on PCB with on-board components Moritz Klein (https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-vca/ - Two voltage-controlled amplifiers Two CV inputs for each, one primary and one other than Source Code.