Go back to the guest room and the piano. Look closely at the sheet of music and see at the top: A=la, B=ti, C=do, D=re, E=mi, F=fa, G=so. Look down at the keyboard and starting with the first active key on the left, numbered 1 – 7, left to right, click on 5 – 6 – 7 - 3. It spells out GABE. If you have done it right the picture above the piano will move back exposing the missing jewels.