This guide will walk you through how to complete the puzzle Cogwork Core Music Pillar Puzzle in Hollow Knight Silksong.
How to Start the Cogwork Core Puzzle
At the highest point of the Citadel, you’ll encounter four large music pillars, each made up of several rotating segments. The goal is to line up the notes across all four pillars so that they form a continuous musical pattern from top to bottom.
Step 1: First Pillar
Your goal is to rotate each section so that the musical notes line up in the correct order. Begin at the top, then move downward, making sure every piece matches the pattern you’ve set above. When the alignment is done properly, the entire pillar will display a smooth and connected sequence of notes from top to bottom.


Step 2: Second Pillar


Step 3: Third Pillar


Step 4: Fourth Pillar


Once all four pillars are aligned correctly, step onto the button located on the central platform. Doing this will activate the puzzle, causing your needle to play the full, completed melody. When the sequence finishes, you’ll officially unlock and learn the Architect’s Melody