Frisk places a crooked finger on their chin, projecting that they're thinking.

This might be nicer if they knew how to play music just by looking at the keys instead of having to touch them, feel exactly which note's where, 'cause they'd like to teach Chara how to play in this little copy-game.

Frisk matches them, their own key-presses, the two more, and then two more. A copy game into a memory game, maybe! A puzzle.