Legendary pianist, conductor and recording artist Daniel Barenboim performed the complete Beethoven piano sonata cycle in eight concerts at Berlin's Staatsoper - one of the world's most beautiful opera houses. This two-hour GREAT PERFORMANCES special features the entire fourth concert, which consists of five sonatas - including the audience favorite "Appassionata" (Sonata No. 23, F Minor, Op. 57). Also featured are excerpts from Barenboim's master classes with acclaimed young pianists Lang Lang, Jonathan Biss and Shai Wosner. Barenboim, who has played the piano sonatas for more than 50 years, offers insight into a vital repertoire that continually affirms its place among the most popular works in the entire piano literature. The eight concerts were produced in high definition and pristine surround sound. The other sonatas featured in the concert segment are Sonata No. 5, C Minor, Op. 10, No. 1; Sonata No. 11, B-flat Major, Op. 22; Sonata No. 19, G Minor, Op. 49, No. 1; and Sonata No. 20, G Major, Op. 49, No. 2.