var timesClicked = 0,
		timesArray = new Array(),
		lastClickTime = 0,
		date = new Date,
		BPM = 0;

var songs = {
	100 : {
		mp3:'fichier.mp3'
	},
}

loadSong= function(){

}

var targetBMP = 110,
		 testdiv = document.querySelector('#t');


	$(window).on('click keypress', function(){

		timesClicked += 1;
		lastClickTime = Date.now();
		timesArray.push(lastClickTime);
		var last2 = timesArray.slice(-4),
				last2total = last2.length,
				totalLengthMilli = 0,
				milliDistence = (((1000 * 60) / (last2[1] - last2[0])) + ( (1000 * 60) / (last2[3] - last2[2]))) / 2;
				BPM = Math.round(milliDistence)



		if (timesClicked >= 4){
			$(".bpm").text(" "+ BPM +"bpm")
		} else{
			$(".bpm").text("Click or Press Any key " + ( 4 - timesClicked) + " More Time(s) to Get BPM")
		}

	if( BPM < 80 ){
		document.body.style.backgroundColor = 'green'
	} else if (BPM > 250) {
		document.body.style.backgroundColor = 'red'
	} else {
        loadSong(BPM)
    }



	});





















autre :



    var songs = [
        // liste a 90bpm
        ['Musique/90BPM/(1).mp3','Musique/90BPM/(2).mp3', 'Musique/90BPM/(3).mp3'],
        // liste 100BPM
        ['Musique/100BPM/(1).mp3', 'Musique/100BPM/(2).mp3','Musique/100BPM/(3).mp3','Musique/100BPM/(4).mp3','Musique/100BPM/(5).mp3',]
        // liste 110bpm
        ['Musique/110BPM/(1).mp3', 'Musique/110BPM/(2).mp3','Musique/110BPM/(3).mp3','Musique/110BPM/(4).mp3','Musique/110BPM/(5).mp3',]
        // liste 120bpm
        ['Musique/120BPM/(1).mp3', 'Musique/120BPM/(2).mp3','Musique/120BPM/(3).mp3','Musique/120BPM/(4).mp3','Musique/120BPM/(5).mp3',]
        // liste 130bpm
        ['Musique/130BPM/(1).mp3', 'Musique/130BPM/(2).mp3','Musique/130BPM/(3).mp3','Musique/130BPM/(4).mp3','Musique/130BPM/(5).mp3',]
        // liste 140bpm
        ['Musique/140BPM/(1).mp3', 'Musique/140BPM/(2).mp3','Musique/140BPM/(3).mp3','Musique/140BPM/(4).mp3','Musique/140BPM/(5).mp3',]
        // liste 150bpm
        ['Musique/150BPM/(1).mp3', 'Musique/150BPM/(2).mp3','Musique/150BPM/(3).mp3','Musique/150BPM/(4).mp3','Musique/150BPM/(5).mp3',]
        // liste 160bpm
        ['Musique/160BPM/(1).mp3', 'Musique/160BPM/(2).mp3','Musique/160BPM/(3).mp3','Musique/160BPM/(4).mp3','Musique/160BPM/(5).mp3',]
        // liste 170bpm
        ['Musique/170BPM/(1).mp3', 'Musique/170BPM/(2).mp3','Musique/170BPM/(3).mp3','Musique/170BPM/(4).mp3','Musique/170BPM/(5).mp3',]
        // liste 180bpm
        ['Musique/180BPM/(1).mp3', 'Musique/180BPM/(2).mp3','Musique/180BPM/(3).mp3','Musique/180BPM/(4).mp3','Musique/180BPM/(5).mp3',]

    ]