SynthDef(\formoo, {
	arg formants = #[850, 1610];
	var sig, env;
	env = Env.perc(\attack.kr(0), \decay.kr(1)).ar(Done.freeSelf);
	sig = 10.collect{
		var octave = [1, 2, 0.5, 1.5];
		// base freq * octave * detuning over time
		// sounds like a chorus fx
		var voice = Saw.ar(\freq.kr(220) * LFNoise2.kr(3).linlin(-1, 1, 0.99, 1.1) * octave.choose);
		// formant * detuning; very high resonance
		voice = RLPF.ar(
			voice,
			formants *
			formants.size.collect{
				LFNoise2.kr(3).linlin(-1, 1, 0.98, 1.05)
			}, 0.05).sum;
		// detune and blur some more
		voice = voice + PitchShift.ar(voice, {Rand(0.01, 0.1)}, 0.98) * 0.5;
		// a bit of distortion
		voice = voice.softclip;
	};
	sig = Splay.ar(sig);
	// narrowing the spectrum a little more
	sig = RLPF.ar(
		sig,
		\ff.kr(4700) *
		LFNoise2.kr(1).linlin(-1, 1, 0.95, 1.05),
		\qr.kr(0.9)
	);
	sig = sig * env;
	sig = sig * \amp.kr(0.25);
	sig = Limiter.ar(sig);
	Out.ar(\out.kr(0), sig);
}).add;