Documentary about world-renowned pianist Lang Lang's four-day recording session in the Golden Hall of the Vienna Musikverein that saw him tackle Mozart's 'Piano Concerto No. 17 in G Major' and 'Piano Concerto No. 24 in C Minor'. Accompanied by The Vienna Philharmonic and conductor Nikolaus Harnoncourt, Lang Lang was followed by a film crew who captured the rehearsals and final performances of these challenging works.