(
var seed = thisThread.randSeed = 1e8.rand.debug('seed');
{|dur = 30|
	var voices = 2.pow(1.rrand(4)),
	sig = DelayC.ar({ Pan2.ar(
		PMOsc.performList(\ar, {
			var freq = Lag.ar(LFSaw.ar([10,15]/((1..5).choose*[1,2,4].choose)).exprange(
				{200.rrand(400)}!2, {500.rrand(1100)}!2
				* Line.kr(0.5.rrand(2), 3.rrand(8.0),dur)
			));
			[freq, freq/[2,4].choose + SinOsc.kr([10,25],0,5), XLine.kr(0.1,1.rrand(3.0),dur/1.rrand(2.0))]
		}.()).sum/2,
		[SinOsc,LFTri].choose.kr({4.0.rrand(11)}!2 * [XLine,Line].choose.kr(1,4,dur))
	).sum/2 
	* LFGauss.kr(XLine.kr(\beat.kr, \beat.kr / \beat_change.kr, dur) / [0.5,1,2,4].choose, 0.3) 
	* EnvGen.kr([
		Env.perc(0.1,dur),
		Env.sine(dur),
		Env.performList(\new, {|len| [
			[0]++Array.rand(len,0.1,1)++[0],
			Array.rand(len,0.1,1).normalizeSum * dur,
			Array.rand(len-1,-3.0,3.0)+[0]
		]}.(2.rrand(10)))
	].choose) } ! voices, 4, { 0.1.rrand(4) } ! voices, 1 / voices).sum * Line.kr(1,1,dur+5,doneAction:2);
	sig = Rotate2.ar(sig[0],sig[1], LFSaw.kr(Duty.kr(dur/4.rrand(16), 0, Drand([-1*\beat.kr,\beat.kr].reciprocal,inf))));
}.play(args:[
	dur:1.rrand(25.0).debug('dur'), 
	beat:1.rrand(6)*(1..4).reciprocal.choose/4, 
	beat_change:1.rrand(8)
])
)