LYCORISAUREA'S PROFILE

I'm sooo frustrated! I really like the game but I just get the same ending over and over again, for me it doesn't look like I'm overlooking something...

For example I found the piano and I have the music sheets... but what now? Where is the hint that tells me how to play this damn thing?

How can I get into this skull room? And how can I survive what's waiting after the teddybear puzzle? Where can I find the golden key and how can I enter the room in the basement with this weird puzzle? And what should I do to meet that girl in the basement?

I'm playing this game for 2 days and I'm really stuck. Is there no chance you can write a walkthrough? I really don't know what else to do... And that's a shame because this game is pretty good.