Variations on a Theme by Haydn, Op. 56a - Variation IV: Andante con moto (Brahms: Variation IV: Andante con moto [Variations on a Theme by Haydn, Op.56a]|Ｂｒａｈｍｓ：　Ｖａｒｉａｔｉｏｎ　ＩＶ：　Ａｎｄａｎｔｅ　ｃｏｎ　ｍｏｔｏ　［Ｖａｒｉａｔｉｏｎｓ　ｏｎ　ａ　Ｔｈｅｍｅ　ｂｙ　Ｈａｙｄｎ，　Ｏｐ．５６ａ］)