I just bought Richman's book as a result of Bernhard and Goaleven here..cmon, conform damnit! (j/k)
in reality most of the Richman drills use the 370 Bach Chorals as sight reading exercises. It took me over a month to sight read through them all just once using his visual perception 5 drill at about an hour or more average of work each day.
It doesn't matter if you can't "name" a key as you play it (look at a note on the page real fast and say "that's an F.") I've been playing for almost a year and it hasn't hurt me at all. I am still able to sight read reasonably fine.I am an adult learner to. I think that may have something to do with it.What is important is that you see a note (note as a letter but a mark somewhere on a staff) and you can map it to a finger without much effort.
not that I know of, I sheet music archive only has a couple of them, there's 371 total. I got a good edition from amazon for cheap that has them all plus more harmonized melodies. And the pages don't shut on you . here's the link:https://www.amazon.com/exec/obidos/tg/detail/-/0793525748/qid=1090506286/sr=8-1/ref=sr_8_xs_ap_i1_xgl14/104-3725771-2446322?v=glance&s=books&n=507846
that sounds like a good book goalevan, but does sightreading the chorales have any advantage over sightreading the two part inventions? (are the chorales easier?)donjuan