Piano Concerto No. 2 in B Flat Major, Op. 83 - Brahms: Piano Concerto No. 2 in B Flat Major, Op. 83 - 4. Allegretto grazioso - Un poco più presto (降B大调第2号钢琴协奏曲，作品83 - 第四乐章 优雅的稍快板，一点最急板)