(
SynthDef(\bandoo, {
	var sig;
	// base osc
	sig = Pulse.ar(
		\freq.kr(120) * [1.05, 1.1, 0.8, 1.5],
		LFNoise1.ar(0.04).linlin(-1, 1, 0.3, 1)
	);
	sig = Splay.ar(sig);

	// low pass filter with random range and resonance
	sig = RLPF.ar(
		sig,
		LFNoise2.ar(0.08).linlin(-1, 1, 450, 1600),
		LFNoise2.ar(0.1).linlin(-1, 1, 0.25, 0.6)
	);

	// random pitch shifting and amplitude for each voices
	sig = [
		sig * LFNoise2.ar(0.02).linlin(-1, 1, 0.1, 1),
		PitchShift.ar(sig, 0.05, LFNoise2.ar(0.14).linlin(-1, 1, 0.5, 2), 0.4) * LFNoise2.ar(0.01).linlin(-1, 1, 0.1, 1),
		PitchShift.ar(sig, 0.02, LFNoise2.ar(0.09).linlin(-1, 1, 0.25, 1.1), 0.1) * LFNoise2.ar(0.04).linlin(-1, 1, 0.1, 1)
	];
	sig = LPF.ar(sig, 490 * LFNoise2.ar(0.19).linlin(-1, 1, 0.25, 3), 0.3);
	sig = Splay.ar(sig, 0.1);
	sig = sig * \amp.kr(1);
	sig = Limiter.ar(sig);
	Out.ar(\out.kr(0), sig);
}).add;
)

Synth(\bandoo, [freq: 220]);