Bass clarinet. Nominal pitch: B♭.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~82362~187536/full/,150/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~82363~187535/full/,150/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~82364~187534/full/,150/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~82365~187533/full/,150/0/default.jpg