Undertale Haunting Song Piano Puzzle
solution to the piano puzzle •↑→•↓•↓→
you have to press Enter or Z to do the • and press Enter or Z at the same time as you press the directional button to play that note.
(i thought you just had to press the direction lol i didn't realize you had to press Enter at the same time)
i also left the GREAT TREASURE beyond for you to see unspoiled because it is indeed great.