I ran across a book not too long ago, but now I can’t remember its name. It was a lot of approaches to writing the same incident (something like 80 versions of it); the basic incident was characters having an argument on a bus, I think. Does that ring a bell for anyone?
Sounds inspired by Rashomon.
Edit: Oh, wait, right, that’s comics…nevermind.
Edit 2: But, Amazon provide a link to Exercises in Style, which is probably what you’re looking for.
Not exactly, but it got me to the right one, so thanks! (Exercises in Style)