Piano Guidance
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What key can open every door?

A skeleton key has the warded section of the key removed so that it opens all the doors of a system. Some applications, such as a building with multiple entrance doors, have numerous locks that are keyed alike; one key will open every door.

en.wikipedia.org - Skeleton key - Wikipedia
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Key able to unlock multiple locks

padlock skeleton key with all of the teeth filed down (right) and a normal key (left) for the same lock. The normal key on the left will open only the lock that it goes to, but the skeleton key on the right will open any lock with this particular keyhole.

Two warded lock keys and a homemade skeleton key.

A skeleton key (also known as a passkey[1]) is a type of master key in which the serrated edge has been removed in such a way that it can open numerous locks,[2] most commonly the warded lock. The term derives from the fact that the key has been reduced to its essential parts.[2] The term is also used synonymously with master key to refer to any key, keycard or other device capable of opening a variety of locks.[citation needed]

Master keys [ edit ]

A common set of skeleton keys used to open most types of warded padlocks A skeleton key is a key that has been filed or cut to create one that can be used to unlock a variety of warded locks each with a different configuration of wards. This can usually be done by removing most of the center of the key, allowing it to pass by the wards without interference, operating the lock. To counteract the illicit creation of such keys, locksmiths can put wards not just in the center but on the outside as well, making the creation of a skeleton key more difficult. Lever lock skeleton keys are used in a lock with usually three or five levers and a set of wards that come into contact with the bit of the key only on the sides—the top is for pushing the levers to their correct heights while the warded section of the key just has to pass uninterrupted to allow the key to rotate fully. A master key system of lever locks has the same lever heights in all locks. Each door will have different wards and can only be opened by the correctly warded key or the master key. A skeleton key has the warded section of the key removed so that it opens all the doors of a system. Some applications, such as a building with multiple entrance doors, have numerous locks that are keyed alike; one key will open every door. A keyed-alike system is different from a master key system as none of the locks have a key that can open only that lock. Skeleton keys have often been associated with attempts to defeat locks for illicit purposes, to release handcuffs for example, and standard keys have been filed down for that purpose. Legitimate skeleton or master keys are used in many modern contexts where lock operation is required and the original key has been lost or is not available. In hotels without electronic locks, skeleton keys are used by housekeeping services to enter the rooms.

See also [ edit ]

References [ edit ]

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Is Yamaha P45 good for beginners?

The Yamaha P45 is certainly a fantastic member of Yamaha's digital piano family. It's affordable and portable and still provides the touch and sound of a more premium piano, making it one of the best pianos for beginners.

gear4music.com - Yamaha P45 - The Best Beginner Piano? - Gear4music

The P45’s design and feel

A stage piano’s main use is to be a fully featured piano that is also somewhat portable for gigging, hence its name. As a result, stage pianos are usually a little more streamlined in shape and lighter than a normal digital piano. The Yamaha P45 is no exception; it’s 11.5kg, which, as far as pianos go, is lightweight. Much of a stage piano’s weight is due to the hammer weighting in the piano keys, so non-weighted keyboards are extremely light. The Yamaha P45 has “Graded Hammer Standard” action. This action splits the weight of the keys into different zones: lower notes are heavier than higher keys when you press them down. Splitting the hammer action into zones saves the extra weight that individually weighted keys would need while also providing good quality hammer weighting to the keyboard. As you learn the piano, you may feel that you prefer the keys to be a little more or less responsive to dynamics. Fortunately, the P45 lets you adjust the touch sensitivity. Soft sensitivity means the volume will not change too much regardless of how hard or soft you play. Harder sensitivities, on the other hand, are more responsive; you can achieve dramatic changes in dynamics. This works on all sounds except pipe organ and harpsichord as these acoustic instruments tend not to respond much to how hard you play the keys.

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