The song isn't a short one--it can be, but there are parts that loop, parts that Frisk catches their mind and fingers on. Hypnotic repetition. It's no wonder Chara starts humming along, a thing that stretches Frisk's smile wider.

"It's from Serif. He's a skeleton," they say once they're asked, still resting their hands on the keys. "Dunno if you've met him yet. But he's...he comes from a scary, bad place, but he's got a home here. We're family now."

Frisk turns, looking at Chara rather than nothing. It takes a moment for their eyes to focus. "That was the one good thing he brought along once he got here, 'sides him. I play it 'cause he likes it."