I opened a door off the corridor. The room was much like a psychiatrist’s office, full of bookshelves and with diplomas on the wall. There were two chairs, a desk and a couch. Two men were sitting in the chairs: A beard and pipe identified the first man immediately as a psychiatrist, and the second, who seemed desperately nervous, was obviously the patient.

“So, Mr. Patient,” began the psychiatrist, “what can I do for you?”

“Well, Doc,” muttered the patient unhappily, “I keep on thinking I’m a dog.”

“I see. And how long has this been going on?”

“Since I was a puppy.”

“Excuse me,” I interrupted, “I’m looking for the Piano Squad.”

“This is Very Old Jokes,” explained the psychiatrist apologetically. “Pianos are down the corridor, first on the left.”

“Sorry,” I muttered somewhat sheepishly, and quietly closed the door. “I keep on doing that,” I murmured. “They should really label these doors better.”

We walked along the corridor, found the correct door and opened it to reveal a room about fifty feet square. The walls were roughly plastered, and the vaulted stone ceiling was supported in the center of the room by a sturdy pillar. Set into the wall to our right was an aperture the size of a single garage, painted bright white and illuminated from within by several hundred lightbulbs. As we watched, there was a faint buzz, a flicker, and an ornate cabinet piano suddenly appeared in the aperture. Almost instantly a workman dressed in brown overalls and with a flat cap moved forward to wheel it out on well-oiled castors. Facing the bright white opening was a control desk that looked like a recording studio’s mixing console, and behind this were two men of youthful countenance, dressed in linen suits. They were wearing headsets and had the harried look of people under great pressure.

“Upright rosewood returned from Sons and Lovers,” whispered the one who was standing. “Stand by to send the Goetzmann into Villette.”

“Check!” shouted the other man as he adjusted the knobs and sliders on the console. The workman pushed a Goetzmann grand into the empty aperture, stepped back, called “Clear,” and with another buzz, the piano vanished.

They looked at us as soon as we entered, and I nodded a greeting. They nodded one back and returned to their work.