The most important compositions of this period of Mackenzie's life were the Quartette in E flat for piano and strings, Op. 11, and an overture, Cervantes, which owed its first performance to the encouragement and help of von Billow.
Finally I will have a woodwind player, playing an E flat clarinet, soprano saxophone and bass clarinet.
The trumpet part is fully chromatic and always crooked in either F or E flat.
A clear melody in E flat major weaves its way through the piece, appearing in a minor guise in the third stanza.
The compositions belonging to the period of his residence at Weimar comprise two pianoforte concertos, in E flat and in A, the " Todtentanz," the " Concerto pathetique " for two pianos, the solo sonata " An Robert Schumann," sundry " Etudes," fifteen " Rhapsodies Hongroises," twelve orchestral " Poemes symphoniques, " " Eine Faust Symphonie," and " Eine Symphonie zu Dante's ` Divina Commedia,' " the " 13th Psalm " for tenor solo, chorus and orchestra, the choruses to Herder's dramatic scenes " Prometheus," and the " Missa solennis " known as the " Graner Fest' Messe."
