 The piano part has sometimes been called skeletal, and though technically demanding, it has been considered to lack Tchaikovsky's characteristic boldness when compared with his other piano concertos.David Brown suggests this lack of boldness was due to the solo part being incorporated without any attempt to rewrite the musical material originally intended for the Symphony in E-flat.Others have argued that the pianistic texture is often congenial to the keyboard and that the adaption on the whole is well done.