Time to get out your white-out again. This is something that had been bugging me for many years of working with A Funky Primer, by my old professor, Charles Dowd. Most of the book consists of bass drum and snare drum combinations along with 8th notes on the hihat. A few places, though, there are these oddball patterns where the hihat falls on the e's and a's:
There's nothing wrong with the pattern, I guess, except that it makes no sense in context- there's nothing else like it anywhere in the book, except these few random measures. After a couple decades of just ignoring those patterns, it dawned on me that when you beam the notes this way:
The result is exactly what you would expect for that page of the book. I imagine the copyist was getting in a groove with his work, and got a little cocky about knowing where the beams were supposed to go without double-checking his master copy, and screwed it up.
A couple more of these after the break:
These two are from the "hands only" part of the book:
Properly beamed this becomes: