Can You Open It? Level 7 Walkthrough

1. Press the note on the door to play the tune.
Replay the tune by playing it on the piano.

Press the following buttons (all the numbers I wrote are white keys numbered from left to right, and black key means any black key)

1 3 1 3 5 black 4 4 6 2 2

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2. Proceed to the next level!