(
  {
    var pitchOsc;
    var ampOsc;
    pitchOsc = { 300 + SinOsc.kr(0.1, 1.5pi, 20, 20); };
    ampOsc = SinOsc.kr(0.5, 1.5pi, 1.0, 1.0);
    SinOsc.ar([pitchOsc, pitchOsc], 0, ampOsc);
  }.play;
)

(
  { [SinOsc.ar(440, 0, 0.2), SinOsc.ar(442, 0, 0.2)] }.play;
)

(
  {
    var freq;
    freq = [[600, 880], [400, 660], 1320, 880].choose;
    SinOsc.ar(freq, 0, 0.2);
  }.play;
)

(
  {
    Pan2.ar(PinkNoise.ar(0.2), SinOsc.kr(0.5));
  }.play;
)

(
  {
    Pan2.ar(PinkNoise.ar(0.2), -0.3);
  }.play;
)

(
  {
    PinkNoise.ar(0.2) + SinOsc.ar([440, 442], 0, 0.2) + Saw.ar([660, 662], 0.2);
  }.play;
)

(
  {
    var a, b;
    a = [
      SinOsc.ar(440, 0, 0.2),
      Saw.ar(662, 0.2)
    ];
    b = [
      SinOsc.ar(442, 0, 0.2),
      Saw.ar(660, 0.2)
    ];

    Mix([a, b]).postln;
  }.play;
)

(
  var n = 8;
  {
    Mix.fill(n, { SinOsc.ar([220, 500 + 500.0.rand], 0, 1 / n) });
  }.play;
)

(
  var n = 8;
  {
    Mix.fill(n, { |index|
      var freq;
      index.postln;
      freq = 440 + index;
      freq.postln;
      SinOsc.ar(freq, 0, 1 / n)
    });
  }.play;
)