The Music Box Key is one of the Keys. In 1851, Harland used the Music Box key in Hammersmith's final moments to make him tell Harland and his brothers where Delacotre was. In 1915, John invokes a secret command of the key on Fiona Locke and gives her subconscious instructions. A few hours later, Fiona, though slightly dazed by the key's effects, used the Music Box Key to make birds hang up the laundry and raccoons to sweep and mop the walkways around Keyhouse. Chamberlin Locke then locked it alo