古典音乐名演:Hi-Res,4K:荷兰著名钢琴家罗纳德·布劳提冈Ronald Brautigam演奏贝多芬《降A大调第三十一钢琴奏鸣曲》(古钢琴版) Ronald Brautigam plays van BEETHOVEN, Ludwig:Sonata No. 31 in A flat major, Op. 110 van BEETHOVEN, Ludwig (1770–1827) Sonata No. 31 in A flat major, Op. 110 (1821–22) 18'09 Fir