ABN 37 Contrabassoon. Amati is one of the only companies making the low C model of the contrabassoon in the world. This contrabassoon has two options: put on the long bell to be able to play down to low B-flat, or take that curved part off and put on the bell topper to be able to play down to low C. With either setup, we find there to be greater projection, even more richness to the sound, and a unique visual effect as well. All of our contrabassoons come with a great deal of setup work (tuning voicing, tone hole adjustments, key height adjustments) pre-done before we ship you your contrabassoon. We have done this setup work on over 100 Amati contrabassoons, and we take great pride in the instrument you will be receiving from us. We are the biggest sellers of Amati contrabassoons and there is a good reason. Contact us (ask for the "contrabassoon queen") and we'll be glad to assist you with any questions you might have.