Twinkle TwinkleClose to the Switches and from whence you came, a stair descends. Close to the receptacle of thrown away items lies your next adventure. Go there now.
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If you figured out which spot the task was referring to, you could find a touch screen that played different notes depending on where it was touched.
After playing part of the song Twinkle Twinkle Little Star, it would display the word "interstellar".
The text describes the small stairs outside of the C hall (with switches meaning the Nintendo switches). At the spot one would find a touch screen which plays tones depending on where one presses on the screen. If one played a part of twinkle twinkle little star, the password interstellar would be displayed. It didn't matter what scale was used, all scales worked (where all the correct tones could be reached).