Variations Mid surdos often vary the sticking by personal preference. 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
row_2 = row_1 + v_margin + 12; row_1 = bottom_row + v_margin + 12; row_1 = v_margin+12; out_row_2 = out_working_increment*1 + out_row_1; out_row_3 = out_working_increment*2 + out_row_1; rotary_knob_row = top_row - 30; //special-case the knob spacing on the mid surdos, faster than we play it Paul Simon https://www.youtube.com/watch?v=A3o30YJiWsc (also featuring drum tricks) https://www.youtube.com/watch?v=frLXzG9-W3Q (until the callout around 2:30 Duro https://youtu.be/v9A9n-kMjz0?t=209.