PoA teaser: "Something wicked this way comes"

[SnapesRaven]

Good morning!

I'm new to this group because I accidentally made a mistake by 
posting this to the book discussion list so I was asked to go here 
with this.

I wonder whether this has been discussed here before but since the 
trailer's release at the WB site only little time has passed so I 
hope this idea is a new one.
:)

I downloaded the teaser yesterday and wonder whether or not you agree 
with me that the omen 'something wicked this way comes' is pointing 
to the obvious but false assumption that the danger for Harry is 
caused by Sirius' appearance at Hogwarts.
I howled with laughter when I heard the choir sing this line in 
exactly the same moment as the Boggart 'Snape' exited the wardrobe. 
Snape does look 'wicked' indeed in this scene (and I'm sure some 
slashy shippers will be very glad about this 'coincidence'). 

Later I searched the web for a similar songtext and indeed found a 
song with this title by a group called "Siouxsie and the Banshees". 
That's interesting, isn't it? The banshee is known as a magical 
creature and some kind of a death omen (weeps beneath a window when 
someone's going to die). It is quite fitting, I think, because with 
Wormtail's escape in the end of part 3, the table seems to turn for 
the good and the bad guys.

Below, I have copied the above mentioned songtext and think that the 
text fits really well! (I'd love to say my bit about each poaragraph, 
but I'm running short in time right at the moment! I'll do this 
later.)
---
>Something strange is happening
My bones do ache and my ears, they do ring
I could pull and tear my skin

I hear and smell and I want to scream
The whispering and a scratching to be let in
>From outside and from within

By the pricking of my thumbs
Something wicked this way comes

There's something evil on the wing
Something wicked is fast approaching
Rushing through a hidden wind

Nothing good is what's in store
It's nothing new and it's rotten to the core
And a-howling at my door

We're dragged helpless in the undertow
The quicksand surround and swallow us whole

By the pricking of my thumbs
Something wicked this way comes

Just around the bend
Rushing on the wind
Here it comes
Here it comes<
---

I know it isn't likely to be the text the choir is singing, but I 
understood the words 'horrible' and 'terrible' and at least they 
match the content of this songtext.

Opinions, everyone?

(I'm sorry if I didn't make everything quite as clear as I should 
have. But I don't have any more time right now.)

Have a nice day,

SnapesRaven *fluttering onto her Master's shoulder after a short rest 
on the 'Hogsmeade' signpost*
*~wicked~ grin*