I've been trying to recall this morning if I've ever played a piece on the bass with 64th notes. I'm pretty sure I haven't. Obviously, I've played quarter notes, half notes, eighth notes, and whole notes many times. Playing a run of 64th notes, however, requires lightning quick precision and dexterity.
I remember how accomplished I felt when mastering Sammy Nestico's tune, "Pressure Cooker." A bass player needs to shift rapidly and almost continuously to conquer that piece. Still, as fast as that tune is, the bass part has no 64th notes. If Nestico had composed an even faster version of it with 64th notes, he could easily have called it "Pressure Cooker (Chased By Ravenous Bears Version.)"
