How do you rank the Busoni among the great piano concertos and what makes it great in your eyes?
In some ways, it’s the greatest in terms of sheer scope and ambition. I think the way to think about it really is as a Mahler-sized symphony with piano.
The fact that it is such a symphonic concerto makes it a logical successor to those of Beethoven and Brahms. Busoni, however, was...