Tchaikovsky's first mention of using the sketches of his abandoned Symphony in E-flat as the basis for a piano concerto came early in April 1893 [REF].
The choice of a single-movement Allegro de concert or Concertstück would have been in line with French piano-and-orchestra works of the period such as Gabriel Fauré's Ballade, César Franck's symphonic poem Les Djinns and Symphonic Variations-several of these works premiered by Diémer.