Beethoven: Piano Sonata No.31 in A flat, Op.110 - 3a. Adagio ma non troppo

歌曲	Beethoven: Piano Sonata No.31 in A flat, Op.110 - 3a. Adagio ma non troppo
歌手	Wilhelm Backhaus
专辑	Piano Sonata No.32 in C minor, Op.111