The “III Concerto” for  Clarinet in Bb/Eb and Symphony Orchestra follows the format of the previous two clarinet Concertos in terms of its structure, but he great difference comes from the inclusion of the Eb clarinet as a new instrument, which has, in this new concerto, large parts as protagonist interspersed with the Bb Clarinet.  This Concerto is divided in three large, clearly differentiated sections without a break between them, emphasizing different rhythms by the soloist throughout the entirety of the work.