Voltra, an audiovisual treat in 1 kilobyte (!) of Javascript code, without any library or dependencies. Made by p01. Run the demo here. Full source code:
c.style.width=c.style.height=`100%`,c.style.position=`fixed`,document.body.style.background=`radial-gradient(#023,#000)`,document.body.style.font=`0 a`;for(x=0;x{for(u=o.outputBuffer.getChannelData(0),d=Math.sin(m/32),e=Math.cos(4*Math.cos(4*d)),f=Math.sin(4*Math.cos(4*d)),c.width=12*64,c.style.transform=`perspective(64vh)rotate3d(0,1,${f},${m/8}deg)scale(${1+(m/96)**64})`;a/64+64>(4*b[i-1]+b[i]*2+b[i++])^1.01*Math.random())i=a++%2048;for(i=y=0;y