Alexander DC reeds were designed with the Big Band and Blue Note eras in mind. The DC models have a profile with more wood on the tip, heart, and sides than the regular Superial model.. Alexander DC reeds were designed with the Big Band and Blue Note eras in mind. The DC models have a profile with more wood on the tip, heart, and sides than the regular Superial model. This produces characteristics of a darker, more powerful, more solid tone core, an enhanced feeling of aliveness, and a singing, yet deep resonance. Made from fine wild grown Var cane, each and every reed table is checked under light for flatness and hand adjusted if necessary.