diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
index 4070d32767..c57c0ff326 100644
--- a/01 - JavaScript Drum Kit/index-START.html	
+++ b/01 - JavaScript Drum Kit/index-START.html	
@@ -9,6 +9,13 @@
 
 
   <div class="keys">
+    <p>
+      <div data-key="54" class="key">
+        <kbd>6</kbd>
+        <span class="sound">tink</span>
+      </div></br></br>
+    </p>
+    <p>
     <div data-key="65" class="key">
       <kbd>A</kbd>
       <span class="sound">clap</span>
@@ -45,6 +52,7 @@
       <kbd>L</kbd>
       <span class="sound">tink</span>
     </div>
+  </p>
   </div>
 
   <audio data-key="65" src="sounds/clap.wav"></audio>
@@ -56,11 +64,32 @@
   <audio data-key="74" src="sounds/snare.wav"></audio>
   <audio data-key="75" src="sounds/tom.wav"></audio>
   <audio data-key="76" src="sounds/tink.wav"></audio>
+  <audio data-key="54" src="sounds/tink.wav"></audio>
 
 <script>
-
+  
+  function playSound(e) {
+    console.log(e.keyCode);
+    
+    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; // rewind to the start
+    audio.play();
+    key.classList.add('playing');
+  }
+  
+  function removeTransition(e) {
+    if (e.propertyName !== 'transform') return; //skip it if it's not a transform
+    this.classList.remove('playing');
+  }
+  
+  const keys = document.querySelectorAll('.key');
+  keys.forEach(key => key.addEventListener('transitionend', removeTransition));
+  window.addEventListener('keydown', playSound);
 </script>
 
 
 </body>
 </html>
+ 
\ No newline at end of file
diff --git a/01 - JavaScript Drum Kit/style.css b/01 - JavaScript Drum Kit/style.css
index bfdba84312..6b1ee563cc 100644
--- a/01 - JavaScript Drum Kit/style.css	
+++ b/01 - JavaScript Drum Kit/style.css	
@@ -34,7 +34,7 @@ body,html {
 
 .playing {
   transform: scale(1.1);
-  border-color: #ffc600;
+  border-color: #0004ff;
   box-shadow: 0 0 1rem #ffc600;
 }
 
diff --git a/02 - JS and CSS Clock/index-START.html b/02 - JS and CSS Clock/index-START.html
index 7a6d27d5bd..b337b7c610 100644
--- a/02 - JS and CSS Clock/index-START.html	
+++ b/02 - JS and CSS Clock/index-START.html	
@@ -62,13 +62,38 @@
       background: black;
       position: absolute;
       top: 50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.05s;
+      transition-timing-function: cubic-bezier(0.1, 2.7, 0.58, 1);
     }
 
   </style>
 
   <script>
+    const secondHand = document.querySelector('.second-hand');
+    const minuteHand = document.querySelector('.min-hand');
+    const hourHand = document.querySelector('.hour-hand');
+    
+    function setDate() {
+      const now = new Date();
+      
+      const seconds = now.getSeconds();
+      const secondsDegrees = ((seconds / 60) * 360) + 90;
+      secondHand.style.transform = `rotate(${secondsDegrees}deg)`;
 
+      const minutes = now.getMinutes();
+      const minutesDegrees = ((minutes / 60) * 360) + 90;
+      minuteHand.style.transform = `rotate(${minutesDegrees}deg)`;
+      
+      const hours = now.getHours();
+      const hoursDegrees = ((hours / 12) * 360) + 90;
+      hourHand.style.transform = `rotate(${hoursDegrees}deg)`;
+      
+      console.log(seconds);
+    }
 
+    setInterval(setDate, 1000);
   </script>
 </body>
 </html>
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 21bec96e8c..e03ef39dcd 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -37,6 +37,9 @@
     
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const inventorsBornIn1500s = inventors.filter(inventor => inventor.year >= 1500 && inventor.year < 1600);
+
+    console.table(inventorsBornIn1500s);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors first and last names
diff --git a/07 - Array Cardio Day 2/index-START.html b/07 - Array Cardio Day 2/index-START.html
index 969566ff78..4722fa0c0e 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -26,15 +26,40 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19 or older?
+    const currentYear = new Date().getFullYear();
+
+    function isPersonOver19(birthYear) {
+      return (currentYear - birthYear) >= 19;
+    }
+
+    const isOnePersonOver19 = people.some(person => isPersonOver19(person.year));
+    console.log({isOnePersonOver19});
+    
     // Array.prototype.every() // is everyone 19 or older?
 
+    const isEveryoneOver19 = people.every(person => isPersonOver19(person.year));
+    console.log({isEveryoneOver19});
+
     // Array.prototype.find()
     // Find is like filter, but instead returns just the one you are looking for
     // find the comment with the ID of 823423
+    const commentWithId = comments.find(comment => comment.id === 823423);
+    console.log(commentWithId.text);
 
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
+    const arrayIndex = comments.findIndex(comment => comment.id === 823423);
+    // comments.splice(arrayIndex, 1);
+
+    const newComments = [
+      ...comments.slice(0, arrayIndex),
+      ...comments.slice(arrayIndex + 1)
+    ];
+    
+    console.table(comments);
+
+    console.table(newComments);
 
   </script>
 </body>