"I don't think it landed."

"Elves seem pretty dense."

"A bit."

"Anyway. Wanna try waterwalking and check if recording works, and speed-ups, and so on..."

"Yeah, let's do that. I can even carry a tune by human standards, can do that test too."

He kisses him and heads outside.

They get a recording recorded of the song. The recording works. It works sped way up, although not arbitrarily. When Cam's heard it enough times to sing it, it works for him too - though not as well, the lake feels wobblier to walk on and his feet get wetter - until he hits a note sharp and plunges into the lake.

He fishes him out and dries him with two waves of his wand. "So they can work for non-Elves but they're finicky."

"Apparently. Thanks for extracting me, I saw what looked like a giant squid in there."

"Really? The lake at Hogwarts has one of those too."

"That's weird! They're saltwater creatures!"

"Are they? I've never heard complaints from ours!"

"Do you have a magic squid?"

"I don't know! You could check, I suppose!"

"But then I'd have a demonic squid! It might offend the local one!"

"Trying for a tiny one won't work?"

"Sure, but then I'd have a tiny demonic squid."

"I can Vanish things, you know."

"If you want a temporary fishbowl sized demonic squid, all right." Squid?

Nope!

"Magic squid," says Cam, handing the empty fishbowl over for Vanishment.

It Vanishes. "What's next on the list?"

"Next thing written down is that conversation privacy spell interacting with telepathy but we'd have to find a soul Elf."

They're sitting off in the distance excitedly designing their house! And singing!

"Interrupt or no? I suppose I could also check if they've invented indoor plumbing and see if that's exciting."