Hi all, I've got an assignment to do at uni about the original performance practices of Bach cantatas. Fun. We have to talk about the instruments used, and the one particular cantata that I'm concentrating on has cornetti and 3 trombones. Unfortunately the library doesn't seem to have much on this (or everyone else has been more conscientous than me and nabbed all the books already) so does anyone know anything interesting? Construction, playing techniques, role in church music etc.? Weird topic I know but any help would be greatly appreciated!