Berkeley have this pro Bass clarinet is a very nice member of the family pitched in B-flat, one octave below the soprano B-flat clarinet. Most basses descends to low E-flat (concert D-flat) but there are variants that descends to low C (concert B-flat). this is excellent professional instrument, Berkeleywind Bass Clarinet is equally suitable for the concert band or the symphony orchestra. It features ABS body, silver-plated keywork, range to low Eb, adjustable neck The instrument is very heavy, so there is a floor stand attached to the clarinet body. come with nice nylon case if you are Saxophone jazz player. you may think about to get one this, my friend perform in Yushi last week with berkeleywind's bass clarinet. people can't believe bass clarinet can do much then tenor saxophone can do.