It’s easy to become frustrated, but do not lose hope, Ilvermornyan. Not when you are so close to finishing the challenge. There has to be a way to access the inside of the piano and retrieving what is inside it.

You start to tuuuuuuug away at the key in the hopes of loosening it - something that shouldn’t be too difficult given the fact that it is so old and decrepit; already there are several keys missing from the instrument and what is one more to join them?

POP!

The key comes loose from the piano leaving a hole and there is a rumbling sound. What shall you do next?