let time;

let pulse = 1333;

let offbeat = 2;

let beat = 4;

let measure = 4;

//chord sounds

  let Abmajor;

  let Dbmajor;

  let Ebmajor; 

  let Bbminor;  

//bass sounds

  let bassAb;

  let bassDb;

//melody sounds

  let melDAC;

​

function preload () {

   Abmajor = loadSound ('CAb.mp3');

   Dbmajor = loadSound ('DAb.mp3');

   Ebmajor = loadSound ('EBb.mp3');

   Bbminor = loadSound ('DBb.mp3');

  //lower sounds

   bassAb = loadSound ('bassAb.mp3');

   bassDb = loadSound ('bassDb.mp3');

  //melodic

   me1 = loadSound ('melodyDAC.mp3');

   me2 = loadSound ('melodyFDA.mp3');

}

​

function setup() {

  background(220);

  createCanvas(400, 400);

  setBPM(90, 0);

  time = millis();

}

​

function draw() {

  //reference https://editor.p5js.org/Antman/sketches/B1A7hDKTX

  //https://editor.p5js.org/xinxin/sketches/7NIDFVVw

  let chords = [1, 2, 3, 4];

  let bass = [1,2];

  let passtime = millis() - time;

  let playchord = random(chords);

  let playbass = random(bass);

  let coinflip = [0,1];

​

  if (passtime > pulse) {

    time = millis();

    beat++;

    measure = measure + 0.5;

  }

​

​

  if (beat === 4) {

    switch (playchord) {

      case 1:

    Abmajor.play();

    break;

     case 2:

    Dbmajor.play();

    break;

     case 3:

    Ebmajor.play();

    break;

     case 4:

    Bbminor.play();

    break;

    }

     console.log('beat');

​

​

    beat = 0;

  }

  if (measure === 4) {

    switch (playbass){

      case 1:

    bassAb.play();

    me1.play();

    break;

      case 2:

    bassDb.play();

    me2.play();

    break;

    }

      measure = 0;

      console.log('measure');

      }

}