The concerto mixes the styles of cabaret music into the traditional orchestral setting. Gruber first conceived the piece while composing the nightclub scene for his 2014 opera Tales from the Vienna Woods. In the score program notes, he wrote, "I was intrigued how the 'shimmy' music played by the cabaret band is itself simple and emotionless, but forms an effective counterpoint to the powerful drama in the foreground. This was the bud from which my concerto grew."[3]
The concerto has a duration of roughly 23 minutes and is cast in one continuous movement. In the score program notes, Gruber described the composition as "progressing through a chain of developing variations," which "is closest in form to a Sinfonietta with piano solo."[3]
The work is scored for a solo piano and a large orchestra comprising two flutes (one doubling piccolo), two oboes, two clarinets, bass clarinet (doubling clarinet), alto saxophone, soprano saxophone (doubling tenor saxophone), three bassoons (one doubling contrabassoon), four horns, three trumpets, three trombones, tuba, timpani, percussion, celeste (doubling keyboard glockenspiel), harp, and strings.[1]