function setup() {

  createCanvas(400, 400);

  osc = new p5.Oscillator();

  osc.setType('sine')

  osc.freq(0);

  osc.start()

}

​

function draw() {

  background(220);

}

function keyPressed(){

  let r=random(Ratios)

  let f = random(200,400);

  osc.freq(f);

}