No. This has got to be fake. I refuse to believe that non-Blaze-era Maiden would fuck up worse than my high school garage band. It's still five starrable on sheer principle, but come on... there HAS to be RL Iron Maiden fuckups out there.
This is exactly wht my best friend's basement sounds like on Friday nights. "YeeeAaAaAaAaAaAa!! We're almost doing it, dude! I got like at least three quarters of those notes!!! And I'm sorry about that Mountain Dew, I'll go get another!"