Atchmon looked while Rarity pressed a key on the organ, the sound of its pipes echoed loudly throughout the chamber, then a spring-loaded trap was set off several yards from them with a comical 'sproing' as it popped out a piece of the flooring. Rarity played another cord, the sound of old cogs turning echoed around them with whatever other machinations built within the castle, and pulled the square piece of flooring back into place; resetting the trap.