This is really useful stuff, thanks v much Mr Hands.
I've tried to get the bowed effect on a couple of tunes by 'violining' the volume knob after sounding the note but it's quite hit and miss.
I haven't looked at the tuba parts - good tip.
As for the high parts, I think it's in part down the idiosyncrasies of the ensemble as some of the players are doing arrangements, but without quite realising the range of the instruments they're arranging for!