Stuck and no idea what to do next. (Spoilers)

[baldur]

Okay so far I have:

- Acquired all 4 pets.

- Acquired Beast, Energy, Nature, Spectral, Fish, Sun forms and Shield, Bind skills.

- Reached maximum HP.

I pretty much went everywhere, there is only 2 spots it seems I can't acess yet:

2 spots in The Abyss, one path is blocked by a purple block and the other is blocked by a huge door.

1 spot in The Veil, you have to jump but it is way too high to be able to reach even when using the Beast form.

What should I do now?

[Xiagan]

Li can open the door. Just click the door with the right mouse button.

[Joakim]

If you dont have him you'll find him somewhere in the veil;)

[baldur]

Okay thanks, I'll look in the veil.

[baldur]

Okay found him and now I am in the sunken city, I am stuck were the ghost of the child is under a tree and you have to play a song or something. I figured out how to play the song and when the song is complete I get a sign. But the song doesn't seem to do anything, I tried singing the song next to the closed door, next to the ghost of the child, next to the ghost of the lady standing near the flowers and didn't seem to do anything.

What should I do?

[Alec]

flowers

[baldur]

Okay thanks, i'll look unto that hint

[Joakim]

Every ghost serves a perpuse. Remember that.

[Alphasoldier]

And 3 others are just annoying. 
Stupid ambush.