sounds fine, he's playing very dangerously, putting in fast notes like hovering the wrist and without utilizing wrist rolling, with just fingering them puts alot of stress on the extensors muscles across the top of the forearm. you can hear he's dropping the beat at places because of running out of stamina fingering that way.
if you guys come across any bumblebee variants, make sure to use the whole arm in swaying motions, letting the hand roll/fall into the keybed instead of hovering the wrist.
