There's a very common interpretation used with Ted Reed's Syncopation: the right hand plays the melody line, swinging the 8th notes, and the left hand fills out the triplets— hopefully everyone has heard of that one by now. If you've tried it, you've figured out that it leads to a lot of multiple hits with the left hand, which will obviously put a pretty hard ceiling on how fast you can do them. But I've seen put forward surprisingly few ways of getting around that; I think one, actually, by Steve Houghton. What I do to make these playable at higher speeds is insert as many single unaccented right hand notes as are needed to break up the left hand multiples (runs of more than two notes), while avoiding any loud-soft or soft-loud right hand doubles.
So here I've given the key for (I think!) every sticking situation occurring in the long exercises in Syncopation, though they sit in different parts of the measure in the actual book. You should be able to do these stickings on the fly while reading the long exercises out of Syncopation (pp. 37-44, old edition), at 200+ bpm.
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