"I mean, I think what's going on is I have human-quality ears and only so much musical discernment, but maybe?"

Kiss. "We should figure out some way of measuring effect size so we can check whether I'm even right that a better performance gives you a boost.

And does tempo matter. On the recording."

"Oooh, good question." Cam speeds it up and plays it again.

And gets dancing lights!

How fast can it go?

There is a tempo, somewhere around 'unrecognizable', where it stops working. 

"Huh. Cool."

"Shall we make a blizzard? I know you can do that any time you feel like it but we squishy things don't get to play weather god very often."

Kiss. "Sure."

They make a blizzard!

Magic music is fun!

They spend a while going through all of the songs with interesting effects that he has the music for. The most exciting one is a stealth song that makes the eyes skip over someone as an unremarkable landscape feature.

"Welp that one's creepy if I think about it from certain angles but I guess I can parse it as, like, camo..."

"I was assuming it's sense-affecting not mind-affecting, yeah - not sure how to check -"

"Let's see if it works on a camera. Won't actually clarify that question, but still -" He tries that.

The person is present on camera, no problem. Played without audio: the person is perfectly visible and noticeable. Played with audio they're still there, if you freeze and look at a frame, but someone you show the video (they fetch an amused Tyelcormo to look) will not notice anyone.

"....so maybe it's mind-affecting. Some of these definitely are - I don't even want to touch anything that's calling itself a love song -"

"Yeah, fuck that."

"I wonder if the evil alt -"

"Don't think we have a way to tell. Gut says it'd look different if that were going on and if the songs work very well, but maybe they don't?"

"Or don't last very long - get someone in the mood for a few hours -"

"Or that..." He checks the transcript.

It continues to not have rape, music-assisted or otherwise! They eat. They have long osanwë conversations broken up only by giggling. They do spend a few hours of the afternoon singing -

"- but that's not suspicious in itself, that's just - Elves - Findekáno and I wrote songs together -"

"Yeah, I'm familiar with the musical proclivities of Elves."