i'm extremely bored at work so i went through it frame-by-frame, and i'm pretty sure they snuck in a different clip of manabe. one frame he's definitely looking at the audience and the next he's got his whole head turned downwards towards the guitar, and unless he has undisclosed super powers (which is well within the realm of possibility) he couldn't move his head that fast in one frame's time.
i'm a bit of an film editing nerd so this actually has me slightly interested, i'm going to watch through the rest of it, too.
(just to make sure, i'm not trying to be confrontational or a generic dumb internet kid, i'm just [i]really[/i] bored

)