let currentSoundIndex = 0;

​

function preload() {

  for (let i = 0; i<10; i++) {

    sounds[i] = loadSound ('drum/' + i +'.mp3');

  }

}

​

​

function setup() {

  createCanvas(400, 400);

  console.log(sounds.length);

}

​

function draw() {

  background(220);

}

​

function mousePressed() {

  if (sounds[currentSoundIndex].isPlaying()) {

    sounds[currentSoundIndex].pause();

  } else {

    sounds[currentSoundIndex].play();

    currentSoundIndex = (currentSoundIndex + 1) % sounds.length;

  }

}