In the world of German lieder, Brahms is often overshadowed by Schubert and Schumann. After completing his highly acclaimed series of Schubert lieder recordings, about which Gramophone magazine said, ''he touches greatness as a Schubertian,'' German baritone Matthias Goerne turns to the deeply expressive songs by Brahms. Partnered with Christoph Eschenbach, these two exceptional collaborators reunite for another thoughtfully chosen program.