It's the Wah-wah.
The reason it's a little off is the wah-wah on the guiter panning the sound from left to right. Also, it's not much of a remix. Sorry, but there have been many rock submissions of this song and this is sub-par. Good reditioning, though.
It's an awesome song with a great flash to boot, but it's just a little too short. Other than that, great song!
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