Ferdinand Schubert was a packrat...and thank goodness for that. Ferdinand was the brother of composer Franz Schubert. When Robert Schumann came to visit in 1839, Schumann was surprised to find stacks of music lying all around the apartment. Franz Schubert had died a decade earlier, and among the mess, Schumann discovered an unknown masterpiece. It's come to be called the "Great Symphony," Schubert's Symphony No. 9. We'll hear a concert in London. Sir Charles Mackerras conducts the Philharmonia Orchestra.