Wow, what did those cats snort before those tunes! That was the fastest version of Sing, Sing, Sing I have ever heard!
As a drummer, I might also point out that this clip has the oldest hi-hat I have ever seen. (1937) I am pretty sure that Krupa was one of the first to use them, and may have even been the first.
I have to now post another Tonight Show Band clip, with a special guest drummer. BTW, both Johnny Carson and Ed McMahon were drummers, too!
[youtube=425,350]V-ewGQx4Vfo[/youtube]