In this 2012 Tanglewood Festival concert, the apotheosis of the 19th-century symphony, which stands at the apex of the bridge between Beethoven and Mahler, was paired with the grandest work in the standard piano-concerto repertoire. Yefim Bronfman and Christoph von Dohnányi have become frequent musical partners, working together with several US orchestras in the 19th-century zenith of the piano concerto from Beethoven to Brahms.