function preload(){

  song = loadSound("pa5.wav");

}

​

​

function setup() { 

    // Create Canvas 

    createCanvas(500, 500); 

  song.play();

} 

​

let value = 0; 

​

function draw() { 

    // Set background color 

    background(200); 

    // Fill the color 

    fill(value, value-50, value-100); 

    // Create rectangle 

    rect(25, 25, 460, 440); 

    // Set the color of text 

    fill('lightgreen'); 

    // Set font size 

    textSize(15); 

    // Display content 

    text('Keep on Clicking the Mouse Across'

        + 'the page \nto change Canvas Color.', 

            windowHeight/10, windowWidth/4); 

} 

​

function mousePressed() { 

    value = value + 5; 

    if (value > 255) { 

        value = 0; 

    } 

} 

​