"Will do. What's the song?"

"One of mine. It's not as good a find as one of your alt's next eldest brother's but I can't guarantee those aren't already all over Hell."

"Oh, you compose? That's lovely! Are people honest with demons out of inherent decency or is the deal invalid if, say, I claimed to have a song not in circulation and was wrong -"

"Violin," says Cam, "which is funny for high-context reasons. The deal is invalid if you overstate your confidence, you wouldn't be able to dismiss her."

"Useful. Okay. I'll be back in twenty minutes, I should think."

Nod. "Don't say anything that sounds agreementy till you've got it outlined how you like."

"Got it. Thank you." - and out of Hogwarts, calling his broomstick to meet him in a courtyard, off the grounds, a Apparition-hop further away to somewhere in anonymous Scotland.

He draws a circle.

There is a delay, and a demon appears. She has the wings (red) but no tail; she's darker than Miranda but her hair matches the wings and her eyes are blue. "Ooh," she comments experimentally, peering at the circle.

"Hi, I'm Timothy!"

"Charmed. What can I do for you, Timothy?"

"Scale model of King George the III's throne room in 1801, a cubit across, in some kind of box I can carry? I have a song that I guarantee has not been disseminated anywhere."

"A cubit," she giggles. "Recording or sheet music?"

"Recording." 

"Damn. Well, I'll take it anyhow."

"If I need more historical scale models of things I'll get you sheet music. Thank you."

That seems to suffice, since she makes him a box and holds out her hand.

"It's on a chip in my pocket."

"Oh, fine. I do wash my hands, you know."

"I didn't intend to give offense, I just forget which pocket." Pants are so confusing. 

"I will go through the contents of your pants in the privacy of my own home, then." Smirk.

He is from 2179 and who knows maybe that's a totally reasonable thing to say in 2179 in which case he is fairly miscalibrated on how to hit on Cam - 

- not really the time - 

- "nice meeting you." And she can go home. 

And she is gone.

He waves his wand and sweeps the circle away and flies back. 

Minor is leaning against the door reading.

"Works fine. Which invites the question of how no one ever stumbled on it."

"No idea. I suppose the magic system could be outright contagious."

"Well. We can plan around summoning working - we probably can't announce it like you did, between most people being illiterate and the mind-control concerns being yet untested..."