George Kollias has always been my go-to extreme drummer [https://www.youtube.com/watch?v=RqzZmNqdWck]

But watching "Jazz drummer reacts" video for "Bleed" made my head spin. The speed, precision, complexity of those rhythms - I cannot comprehend what it is like inside his mind while he's playing. [https://www.youtube.com/watch?v=FpooH-TGtBg]

"Clockworks" is another one that makes me question my sanity.