A shell for them,

When blows nails you ruined your original key,
This shell allows you to overcome the problem.
Certainly you will leave your nails, and the tranquility of a quiet morning.
But three hours later to find the spring, to click click, block to block,
well put together as the key, you will block and unlock the nightingale with pride.
Buy this shell if you are good with your ten fingers.
(If you doubt this, ask Madame).
Otherwise take tram or pay 150 as a nut shell!