So I'm sure that I'm not the first person to notice this.

Towards the end of 'Passion', there's a weird noise that plays a couple of times. To me, it sounds like a duck quacking or the sound that vinyl makes when it rubs up against itself.

It starts right after the 'my fears, my lies; aozora noshita, aaaahhhhhh'

Then it goes:

'aaAaaaaaaaa [quack] aaaaaaaaaaaaaaaaaa [quack] aaaaaaaaaaa [quack] aaaaaaaaa [quack] aaaaahh [quack] wonk [quack] uoy naht noitceffa erom deen I [quack] ... [quack], -songs ends with those killer bum bum bum bums-

At first, I thought my CD was damaged but I still hear the quacking in the iTunes version.

Now of course it probably isn't a duck quacking (lol). Does anyone else hear this sound and know what it is caused by?