.. How do I get a copy of Mom's music?

Once you've found the deck of cards in Zoe's safe and see that it's missing an ace --

How do I find and open Zoe's safe?

-- you now understanding the meaning of the message on the cipher cylinder: "Music themes reveal ace." Or do you?

We're not talking about the bagpipe now; we're talking about a longer piece of music, one with several themes in it.

The music you want is the piece you hear Kate playing on the piano in the flashbacks Nancy has about her. The only people in the world who know that music are you and your dad. Give him a call and see what he can do for you.

It'll take him a while to remember and transcribe the music for you, so keep checking the door of your room for it. In fact, you won't see it till --

-- you return to your room after it's been ransacked and cleaned up.

My room has been ransacked!

What do I do with Mom's music?