Neat little game with a room for improvement.
As a fellow Copper Cube 6 user, I am always invested in the games/projects made with CC6. This was a flawed design, for sure. Couple of elements didn't add up, for instance once you press E for pause - the music stops, then you are left wondering around without it. The interactions were fine. I did like the premise, the idea for the game and the note system - when you interacted with the note it showed the billboard with information - that's intuitive.
Overall, the game is functional and it needs more work. Good starting ground for your first game. Wish all the best in the future. Cheers!