 They suggest that it is difficult to imagine at which points the piano part takes over material previously intended as part of the orchestral fabric and at which the soloist merely embroiders upon it.Despite his stated intentions, Tchaikovsky had written "End of movement 1" on the last page of the "Allegro brillante" that would be published by P. Jurgenson as the Third Piano Concerto.At the insistence of the composer's brother Modest, Taneyev began to study the unfinished sketches of the allegro and finale from the E-flat symphony in November 1894.