Also, for what it's worth, the fingerings on the Etude were not an issue, I was only questioning the accidentals. Writing fingerings for the other parts of the study when there are more than 3 or 4 sharps or flats will certainly make my brain relax more . . . I don't want to become dependent on that, nor do I think it's his intention. Can I read without the fingerings, yes, can I do it anywhere near as fast - with some of the more "exotic" key signatures? No. It's definitely a weakness I have, but I suspect that at least in part that's what this exercise is for - part velocity study/finger dexterity, part working through the circle of fifths, probably some other things as well. On my own I would not have written in all the fingerings (probably would have written in a few reminders where I found I had trouble), but this is a well-known, highly qualified teacher, and I'm not going to question his methods. Thanks for your responses. Carry the accidental through the bar as per usual then.