This is a terrific interpretation. The fugue is the challenge; it is unhurried which is essential in this instance (unlike mine, which is too fast and which i really ought to rethink). What is most important, this reading maintains interest throughout, which very few professional recordings of this fugue manage to do. Technical (meaning "purely" technical) issues are few in this account, and the much more important and challenging issue (in this fugue especially) of seeing and expressing the WHOLE, as opposed to its parts, is conquered or, at minimum, pretty much laid to rest. This is, I think, one of the most prolix (to borrow a literary term), improvised-sounding, and therefore scary fugues that Bach ever put to paper!