I put my hands on the keyboard like on the planchette of a Ouija Board hoping to conjure something.
Was a séance held or Ouija board used before the disturbance began?
The keyboard becomes a kind of Ouija board, taking you toward places you may not have wanted to go.
1891, a trademark name (originally by Kennard Novelty Co., Baltimore, Md.), compounded from French oui + German ja, both meaning "yes."