I'm now highly sure these tapes are home made, which is just insane!

7169808

These people are so talented!

7169815
I can't help but agree. Not bad for just "turning a wheel", eh?

7169818
I love how he dances back and forth while turning. XD

7169819
He's got energy, I'll give the guy that. I just looked up about the organ 'books', as they are called, and they take a lot of measuring to make. The standard length of the organ book is around 3 1/2 Meters (a bit over 11 feet) per minute of song. I was right, these things take a while and a damn good sense of rhythm and beats to make, as it's all done by ear at first.

7169808 I don't think I could turn the wheel as good as this guy does.