I am dropping this here, I don't know where I was heading with this..

Yes, like a bad earworm keystone, keystone. It's gone now, but it's spreading.

Keystone ,Stonekey.

http:

//www.stonekey.com/stone-key-partners/overview/

http:

//www.wizard101central.com/wiki/House:Stone_Skeleton_Key#axzz5hbiTd45p

Finish..