nation, the statement is not actually that surprising. And yet, even when writing so-called 'programme' music, for example his Romeo and Juliet fantasy overture, he cast it in sonata form. His use of stylized 18th-century melodies and patriotic themes was geared toward the values of Russian aristocracy. He was aided in this by Ivan Vsevolozhsky, who commissioned The Sleeping Beauty from Tchaikovsky and the libretto for The Queen of Spades from Modest with their use of 18th century settings stipulated firmly. Tchaikovsky also used the polonaise frequently, the dance being a musical code for the Romanov dynasty and a symbol of Russian patriotism. Using it in the finale of a work could assure its success with Russian listeners. Reception Dedicatees and collaborators Tchaikovsky's relationship with collaborators was mixed. Like Nikolai Rubinstein with the First Piano Concerto, virtuoso and pedagogue Leopold Auer rejected the Violin Concerto initially but changed his mind; he played it to great public success and taught it to his students, who included Jascha Heifetz and Nathan Milstein. Wilhelm Fitzenhagen "intervened considerably in shaping what he considered 'his' piece", the Variations on a Rococo Theme, according to music critic Michael Steinberg. Tchaikovsky was angered by Fitzenhagen's license but did nothing; the Rococo Variations were published with the cellist's amendments. His collaboration on the three ballets went better and in Marius Petipa, who worked with him on the last two, he might have found an advocate. When The Sleeping Beauty was seen by its dancers as needlessly complicated, Petipa convinced them to put in the extra effort. Tchaikovsky compromised to make his music as practical as possible for the dancers and was accorded more creative freedom than ballet composers were usually accorded at the time. He responded with scores that minimized the rhythmic subtleties normally present in his work but were inventive and rich in melody, with more refined and imaginative orchestration than in the average ballet score. Critics Critical reception to Tchaikovsky's music was varied but also improved over time. Even after 1880, some inside Russia held it suspect for not being nationalistic enough and thought Western European critics lauded it for exactly that reason. There might have been a grain of truth in the latter, according to musicologist and conductor Leon Botstein, as German critics especially wrote of the "indeterminacy of [Tchaikovsky's] artistic character ... being truly at home in the non-Russian". Of the foreign critics who