This has turned into an elegant little exercise. Paradiddle-diddles have long been bailout pattern of choice for fast tempos— the thing you play to rest your hand a little bit, and break things up. Bob Moses writes about it in Drum Wisdom, and John Riley in Jazz Drummer’s Workshop, I wrote an OK Reed system developing it back in 2012. It’s a thing. This exercise is the most focused presentation of it I’ve seen, and gives us some more vocabulary to work with. All together it’s a pretty functional basic set of stuff.
The drill is to repeat the first beat by itself, then the complete phrase, then the last beat by itself— repeating each thing several times (being careful not to turn the beat around coming out of the paradiddle-diddles). So you’re playing essentially the normal jazz rhythm, then bailing out to the paradiddle-diddles, then the simplistic fallback RRLL pattern, getting back to the normal rhythm when you repeat the whole mess. The entire cycle takes an indeterminate number of measures of 4/4; it’ll be up to you to work out not getting lost in the form while doing it.
Tempo can start around quarter note = 100, to as high in the stratosphere as you want to take it. Goal markers might be 110, 120, 130, 143, 155, 165, 175, beyond.
Some notes on the way it’s written, for those interested: It’s written in 3/4 time, but I omitted the time signature, because it’s really a three beat phrase, which we extend and play over 4/4 time by ad lib repeating parts of it. Also, in jazz (uptempo or otherwise) the expected rhythm values would be quarter notes and 8th notes; I’ve written this in double time to force a certain interpretation of it, and because it’s easier to read on this dense a page.