I can't get over the way they handle the drumroll, by doing what sounds like a burst AR sound and, how, just how dude, overall baffling and impressive performance
Drumrolls are fairly simple. You hit the drum like normal, except you only hold the bachi (drumsticks) with your index finger and your thumb, and the bachi is slightly raised from the drum, allowing the bachi to vibrate against the drum, but this requires proper bachi and a proper drum to be able to do.