u/AbdulRoosetrane

Bass clarinetist here. My section-mate is learning contrabass clarinet, and finding that the low notes are extremely flat. The low Db sounds like a C and the C sounds like a Bb. It's a paperclip contra, not sure what brand, and they're playing on a #3 reed. They're borrowing the instrument from the school, and I had the same problem when I borrowed it last year.

Any help would be much appreciated.

Edit: It's a Leblanc