1. Find the Music Box. The Music Box is located in *Chamber 4B*. To get there, you must first use the lever to access the secret passageway and then head down the stairs to the laboratory floor.
2. Examine the Music Box. Take a close look at the Music Box. You'll notice that there is a small crank on the side.
3. Turn the Crank. Turn the crank to play the Music Box. This will cause the secret door in the laboratory to open.
4. Enter the Secret Room. Step through the secret door and you will find yourself in a hidden chamber.
The Music Box is an important tool in Buried Relic. It allows you to access secret areas and find valuable items. Be sure to keep an eye out for it during your exploration of the museum!