Hello. Liked the game, but can not seem to pass the fourth level. Stuck on the piano. How can it miss? I'm inept and can't finish the game (

Please

I've gone through the last level several times, yet one fishbone eludes me, leaving me stuck with 199/200. I can't even imagine where it could be anymore, I feel like I've covered every bit of area possible (and yes, I did get the one requiring a chair). Could I please get help finding it somehow?...

cant find the last 2 fish bones in level 2, can someone help?

I'm trying to get the achievement but it's sucks that I have to play the level all over each time.