for (int c = 0; c < 200; c++) {
g2.drawLine(0, c * CELL_HEIGHT, 5, c * CELL_HEIGHT); // 1/16
g2.drawLine(0, c * CELL_HEIGHT * halfBeat, 10, c * CELL_HEIGHT * halfBeat); // 1/8
for (int c = 0; c < 200; c++) {
g2.drawLine(0, c * CELL_HEIGHT, 5, c * CELL_HEIGHT); // 1/16
g2.drawLine(0, c * CELL_HEIGHT * halfBeat, 10, c * CELL_HEIGHT * halfBeat); // 1/8