Hmm, think of each beat as a shape that just pops out of the line. Start with a base rhythm—say, a simple 5/8 pattern. For every odd beat, draw a sharp, jagged edge that leans left; for every even beat, a smooth curve that leans right. When the rhythm accelerates, squeeze the shapes closer together, so the line becomes denser, like a crescendo of visual tension. If a syncopation hits, let a line suddenly dip, then spike up—visual wobble. And if the melody drops a whole note, let the line pause, leaving a black hole that swallows the next stroke. Mix in random color bursts whenever the tempo shifts, so the entire drawing feels like a living waveform. Experiment, loop it, and watch the lines dance to the unpredictable rhythm.