diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
index 4070d32767..8fa42b0c65 100644
--- a/01 - JavaScript Drum Kit/index-START.html	
+++ b/01 - JavaScript Drum Kit/index-START.html	
@@ -59,8 +59,28 @@
 
 <script>
 
+  function playSound(e) {
+    const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
+    const key = document.querySelector(`.key[data-key="${e.keyCode}"]`);
+    if (!audio) return; // Stop the function from running altogether
+    audio.currentTime = 0;
+    audio.play();
+    key.classList.add('playing');
+  }
+
+  function removeTransition(e) {
+    if (e.propertyName !== 'transform') return;
+    // console.log(this);
+    this.classList.remove('playing');
+  }
+
+  const keys = document.querySelectorAll('.key');
+  keys.forEach(key => key.addEventListener('transitionend', removeTransition
+  ));
+  window.addEventListener('keydown', playSound);
 </script>
 
 
 </body>
 </html>
+
diff --git a/01 - JavaScript Drum Kit/style.css b/01 - JavaScript Drum Kit/style.css
index bfdba84312..a875121650 100644
--- a/01 - JavaScript Drum Kit/style.css	
+++ b/01 - JavaScript Drum Kit/style.css	
@@ -49,3 +49,5 @@ kbd {
   letter-spacing: .1rem;
   color: #ffc600;
 }
+
+