Mike Jones

I play one of these horns. The B-flat french horn is NOT written in F like the other posts are saying. Their parts are written in B-flat, the same key as the trumpets. BUT, the horn's fundamental pitch is an octave below a trumpet, so the parts look low when you read it. Middle C or D in the staff is about as high as you would see, after that the pitches are really hard to play. There are marching french horns in F, but they are more rare.