As a devoted admirer, I’d like to share my excitement about Deltarune – the spiritual successor to the indie sensation Undertale! In this captivating journey, players engage in battles alongside their comrades, unraveling the enigmas that shroud this extraordinary world. The recently released Chapter 4, part of the latest update, is brimming with intricate puzzles and hidden secrets, just waiting to be unearthed by intrepid explorers like us!
In your gaming journey, you might come across a hidden challenge known as the Golden Piano. To progress and battle the secret boss, you must first crack this enigma. The solution involves arranging the correct musical notes, which will unlock the entire puzzle and earn you some great rewards. Here is a comprehensive guide on solving the Golden Piano riddle in Chapter 4 of Deltarune.
What Is The Piano Puzzle?
In the game Deltarune, the mysterious Golden Piano Hidden Puzzle is essential for unlocking the secret boss of Chapter 4. Inside the old man’s study, you’ll come across a dimly lit door that needs to be entered. Head towards the right, and you’ll discover a bookshelf that can be scaled. Climb as high as you can on this bookshelf, and you’ll find a golden piano resting at its peak. To solve the puzzle, the golden piano must be played in a particular order. You can decipher the sequence from the three unique musical notes scattered throughout Chapter 4.
How To Solve The Piano Puzzle

To crack the Golden Piano enigma, you’ll have to gather three unique musical tones and combine them harmoniously. By playing the right melody on the Golden Piano, you can unlock the puzzle’s secret.
Before embarking on the puzzle, ensure you possess the climbing skill. Acquire this ability by moving through the story sequentially. Once you’ve defeated Jackenstein in combat, he will reward you with Climb Claws that enable wall-climbing. Now, you are fully prepared to locate and assemble the music notes.
Music Note 1 Location

Venture into the aged man’s study situated in the ominous realm known as the Dark World. From there, proceed through the exit located at the bottom left corner. As you progress, you’ll discover a room equipped with a stool close to the entrance. Continue moving to your left, and you’ll come across another room inhabited by shadowy beings spinning around.
At the termination of this room, you’ll notice a wall that can be scaled. Ascend it to access an area adorned with waterfalls. Agilely dodge these cascades and continue climbing higher. In this region, you’ll find a common vessel filled with water where you’ll engage in battle against a mini-boss titled the Water Cooler.
Conquer this boss, and it will bestow upon you the initial musical note.
Music Note 2 Location
Head towards the room where there’s a stool by the doorway. Continue straight ahead, and you’ll find yourself in a glass-windowed corridor. Proceed further in that direction, and you’ll come across a wall you can climb. Ascend it, and everything will be shrouded in darkness. Look for a luminous figure in the lower right corner, interact with it, and a path will appear. Climb up this path, and press the yellow button to collect your second musical note.
Music Note 3 Location
Head towards the study through the door on the upper left side of the house. Once inside, take the door on your left which leads into a dimly lit room filled with bookshelves. Continue moving to the left until you reach a room featuring a large waterfall. Go behind this waterfall and discover a hidden passageway concealed behind it. The tunnel will be dark, but keep going until you find a glowing circle that will open the Wall of Bells.
Approach the Wall of Bells and begin your ascent, leading you to another labyrinth. Continue moving right until you locate a yellow toggle. After that, maintain your course to the right until you encounter a blue toggle. Step on the blue toggle to collect the third and concluding set of musical notes.
Go To The Golden Piano
Once you’ve gathered all three musical notes, it’s now time for you to discover the Golden Piano and put the music together. Head back to the old man’s study, then move towards the door on the top left side. You’ll encounter a dark door on the left once more, but this time, when you enter, take a right turn. You’ll spot a bookshelf that can be climbed on the room’s right side, which will help you reach the Golden Piano.
Play The Music Notes
As soon as you get to the Golden Piano, you’ll see a series of directions in the form of arrows that show you how to play the notes. Just follow these arrows and play the corresponding notes. Once you solve the puzzle, the fireplace located at the back of the old man’s desk will collapse, unveiling a hidden path.
You have another option to solve this puzzle quickly by typing in the sequence: “Up, Dot, Up, Left, Down, Dot, Right, Dot, Right, Down, Left, Dot,” without gathering the musical notes.
Rewards For Solving The Piano Puzzle

Cracking the Golden Piano Enigma unlocks the route to the hidden adversary, the Hammer of Righteousness. Proceed along the fresh trail concealed behind the elderly man’s desk. Turn right, and you will discover the Tablet of Justice resting on the surface.
Try To Get The Justice Axe
Susie sets out to obtain the Justice Axe, an action that summons an old man and initiates a sequence of conversations. The old man will request payment for the Justice Axe and show you its price tag. Upon inspecting it, you’ll discover that you can’t afford it. Then, he will propose a fight and offer the Justice Axe as the prize if you emerge victorious. If you agree, the old man transforms into the Hammer of Justice, signaling the commencement of the battle.
Fight The Hammer Of Justice
If you triumph in the battle, you’ll be rewarded with both the Justice Axe and Shadow Crystal from the secret boss, Hammer of Justice. Even if you don’t win, the old man offers the items anyway. But if you should lose, Susie won’t accept them and insists on another fight against the Hammer of Justice. Consequently, you’ll have to battle again to claim the items if you fail initially.
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2025-06-07 09:44