Possibly there to pull in a few extra innocents, in which case, they'll have a shock or two when it comes to the rest of the music
.
I owe my knowledge of this set to CDM and, I rather believe, the sage of Bracknell, who pointed me in the correct direction for finding it. And I still haven't got round to ordering it myself, though a copy will slog its way across the channel then the border one day, I'm sure. Kegel really is one of those rare conductors with an instinct for the right touch and sound in virtually everything he conducts, it seems to me: a sort of East German Mackerras, perhaps.