Download the Program Notes. For the final concerts of the season, Bernard Haitink is joined by the eminent Portuguese pianist Maria João Pires-in her first BSO appearances since 1999-for Mozart's Piano Concerto No. 23, from the series of great Vienna concertos the composer wrote at the height of his career there. The A major concerto, K.488, is one of the most chamber-musical and intimate of these works. Opening the program is Robert Schumann's dramatic Manfred Overture, composed in 1848 as part of incidental music for Byron's drama of the same name. Grappling with the shadow of Beethoven's symphonies, Brahms famously delayed completing and releasing his Symphony No. 1 to the world until after his fortieth birthday. It bears several deliberate touches of homage to Beethoven but is fully Brahmsian in its spirit and effect.