Nancy Drew: Curse of Blackmoor Manor
There's a musical puzzle awaiting you at the top of the spiral staircase. If you're looking for help, try pacing the stairs a few times to give you some clues. If you're still stumped then know that each noise corresponds with a lever and all you have to do is duplicate the noises you heard. Playing B, A, D, C, A, D, E, E will help you get in “key.”