===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,165 @@
-/****
+/**** 
+* Classes
+****/ 
+var MusicalNote = Container.expand(function (noteType) {
+	var self = Container.call(this);
+	self.noteType = noteType;
+	self.speed = 3;
+	self.hitZone = 150;
+	self.wasInHitZone = false;
+	self.isHit = false;
+	var noteNames = ['Do', 'Re', 'Mi', 'Fa', 'Sol', 'La', 'Si'];
+	var noteAssets = ['noteDo', 'noteRe', 'noteMi', 'noteFa', 'noteSol', 'noteLa', 'noteSi'];
+	var noteSounds = ['soundDo', 'soundRe', 'soundMi', 'soundFa', 'soundSol', 'soundLa', 'soundSi'];
+	self.noteName = noteNames[noteType];
+	self.soundId = noteSounds[noteType];
+	var noteGraphics = self.attachAsset(noteAssets[noteType], {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	var noteText = new Text2(self.noteName, {
+		size: 40,
+		fill: 0x000000
+	});
+	noteText.anchor.set(0.5, 0.5);
+	self.addChild(noteText);
+	self.update = function () {
+		self.y += self.speed;
+	};
+	self.checkHit = function (touchY) {
+		var distance = Math.abs(self.y - touchY);
+		return distance < self.hitZone;
+	};
+	self.playSound = function () {
+		LK.getSound(self.soundId).play();
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x1a1a2e
+});
+
+/**** 
+* Game Code
+****/ 
+var targetLineY = 2200;
+var targetLine = game.attachAsset('targetLine', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 1024,
+	y: targetLineY
+});
+var notes = [];
+var lives = 3;
+var spawnTimer = 0;
+var spawnInterval = 120;
+var gameSpeed = 1;
+var scoreText = new Text2('0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+var livesText = new Text2('Vidas: 3', {
+	size: 60,
+	fill: 0xFF4444
+});
+livesText.anchor.set(0, 0);
+livesText.x = 150;
+livesText.y = 50;
+LK.gui.topLeft.addChild(livesText);
+function spawnNote() {
+	var noteType = Math.floor(Math.random() * 7);
+	var note = new MusicalNote(noteType);
+	note.x = Math.random() * (2048 - 200) + 100;
+	note.y = -100;
+	note.speed = 2 + gameSpeed;
+	notes.push(note);
+	game.addChild(note);
+}
+function updateScore() {
+	scoreText.setText(LK.getScore().toString());
+}
+function updateLives() {
+	livesText.setText('Vidas: ' + lives);
+}
+function hitNote(note) {
+	if (!note.isHit) {
+		note.isHit = true;
+		note.playSound();
+		LK.getSound('hitSound').play();
+		LK.setScore(LK.getScore() + 10);
+		updateScore();
+		LK.effects.flashObject(note, 0xffffff, 200);
+		var index = notes.indexOf(note);
+		if (index > -1) {
+			notes.splice(index, 1);
+		}
+		note.destroy();
+	}
+}
+function missNote() {
+	lives--;
+	updateLives();
+	LK.getSound('missSound').play();
+	LK.effects.flashScreen(0xff0000, 300);
+	if (lives <= 0) {
+		LK.showGameOver();
+	}
+}
+game.down = function (x, y, obj) {
+	var hitAnyNote = false;
+	for (var i = notes.length - 1; i >= 0; i--) {
+		var note = notes[i];
+		if (!note.isHit) {
+			var distance = Math.sqrt((note.x - x) * (note.x - x) + (note.y - y) * (note.y - y));
+			if (distance < 80) {
+				if (note.checkHit(targetLineY)) {
+					hitNote(note);
+					hitAnyNote = true;
+					break;
+				} else {
+					missNote();
+					hitAnyNote = true;
+					break;
+				}
+			}
+		}
+	}
+};
+game.update = function () {
+	spawnTimer++;
+	if (spawnTimer >= spawnInterval) {
+		spawnNote();
+		spawnTimer = 0;
+		if (LK.getScore() > 0 && LK.getScore() % 50 == 0) {
+			gameSpeed += 0.2;
+			spawnInterval = Math.max(60, spawnInterval - 5);
+		}
+	}
+	for (var i = notes.length - 1; i >= 0; i--) {
+		var note = notes[i];
+		var currentInHitZone = Math.abs(note.y - targetLineY) < note.hitZone;
+		if (!note.wasInHitZone && currentInHitZone) {
+			note.wasInHitZone = true;
+		} else if (note.wasInHitZone && !currentInHitZone && !note.isHit) {
+			if (note.y > targetLineY + note.hitZone) {
+				missNote();
+				notes.splice(i, 1);
+				note.destroy();
+				continue;
+			}
+		}
+		if (note.y > 2800) {
+			if (!note.isHit) {
+				missNote();
+			}
+			notes.splice(i, 1);
+			note.destroy();
+		}
+	}
+};
\ No newline at end of file