Code of Music: Sampler + Effects

mySketch
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var song;
var gif;
var img;
let player = new Tone.Player("wintergarden.mp3");
player.loop = true;
player.retrigger = true;
player.toMaster();
​
let sampler = new Tone.Sampler({
  "A1": "FrogVoice.wav"
});
​
sampler.envelope = {
  attack: 0.2,
  decay: 0,
  sustain: 1,
  release: 0.1
}
sampler.toMaster();
​
function keyPressed() {
  let pitch; 
  if(keyCode === 66){
    pitch = "A1";
  }
  else if(keyCode === 67){
    pitch = "A1";
  }
  else if(keyCode === 68){
    pitch = "A1";
  }
  else if(keyCode === 69){
    pitch = "A1";
  }
  else if(keyCode === 70){
    pitch = "A1";
  }
  else if (keyCode === 32) {
    if (player.state == "stopped") {
      player.pause();
    } else {
      player.start();
    }
  }
  
  if(pitch && sampler.loaded){
    // Sampler will repitch the closest sample
    sampler.triggerAttack(pitch);
  }
}
​
function keyReleased() {
  sampler.triggerRelease();
}
​
function preload() {
  song = loadSound('wintergarden.mp3');
  gif = createImg('garden.gif');
  img = loadImage("snowfrog.jpg"); 
}
​
function setup() {
  createCanvas(windowWidth,windowHeight);
  console.log("Play spacebar to start/stop. Mouse left and right to change speed. Click to reverse");
  gif.size(windowWidth,windowHeight);
  player.start();
}
​
function draw() {
  player.playbackRate = map(mouseX, 0, width, 0.2, 0.6);
}
  
function mousePressed() {
  // Displays the image at point (0, height/2) at half size
  image(img, random(0,1000), random(0,1000), img.width/10, img.height/10);
}
​
function mouseReleased() {
  player.reverse = !(player.reverse);
}