TL;DR of the post, generated automatically.

A browser music visualizer with ten styles, one drawn with Three.js and a GLSL shader.

• Styles: most use Canvas 2D. Liquid Glass uses a Three.js fullscreen quad and a GLSL shader.
• Audio: Web Audio AnalyserNode, FFT size 2048, smoothed bass, mid, treble and energy.
• Input: local file, microphone, or shared system or tab audio.
• Feedback: OP asks for thoughts on the shader and performance across devices.