Variations on a Theme by Haydn, Op. 56a - Theme: "Chorale St. Antoni" (Brahms: Theme: "Chorale St. Antoni" [Variations on a Theme by Haydn, Op.56a]|Ｂｒａｈｍｓ：　Ｔｈｅｍｅ：　”Ｃｈｏｒａｌｅ　Ｓｔ．　Ａｎｔｏｎｉ”　［Ｖａｒｉａｔｉｏｎｓ　ｏｎ　ａ　Ｔｈｅｍｅ　ｂｙ　Ｈａｙｄｎ，　Ｏｐ．５６ａ］)