Beethoven's Concerto no. 4 made its public debut in 1808 at Theater an der Wien, an architectural jewel that endowed Vienna with a 1,200-seat concert hall where Beethoven, just two years earlier, had presented his Third Symphony and Fidelio. In the remarkably rich evening programme - which also included performances of the Fifth and Sixth Symphonies - the Concerto stood out for the originality with which the solo instrument dialogued with the orchestra, overturning a well-established model. Contemporary commentary defined this composition as "most extraordinary, elaborate, difficult." The originality lies in the way the piano uses an expressive formula at times close to improvisation, with limitless variations of the initial theme handed back and forth between it and the Orchestra. Radu Lupu will be at the piano; introverted, refined, and a worldwide audience favourite, the magnetically charismatic Romanian is famed for his interpretations of such Austrian and German composers as Mozart and Beethoven, to whose infinite nuances he gives full expression. Antonio Pappano will be on the podium, and in the second part of the concert he will conduct Orchestra di Santa Cecilia in Symphony no. 7 by Anton Bruckner, a composer to be rediscovered again and again in the wrinkles of his monumental and poetic music. Dedicated to Ludwig II of Bavaria, this symphony is also known for having been used by Luchino Visconti in the soundtrack of his film Senso, a dramatic love story featuring an intense Alida Valli, entwined with the events of the Italian Risorgimento.