A circular array of neon bars pulses to a procedurally generated multi-band waveform, with emissive glow and reactive color shifting. Each of the 128 bars sums 1-3 sine harmonics at its own base frequency and applies a slow sinusoidal beat envelope, mimicking an FFT spectrum without needing real audio input. Bar heights are smoothed by exponential interpolation each frame, and per-instance color is set through an InstancedBufferAttribute whose hue slowly cycles.