SinOsc root, third, fifth;
Gain g;
PitShift p;
root => g; third => g; fifth => g;
g => p;
p => dac;

440 => root.freq;
550 => third.freq;
660 => fifth.freq;
0.1 => g.gain;
1::second => now;

while (true) {
    Math.random2f(0.25, 4) => p.shift;
    1::second => now;
}