He [Edvard Grieg] had then just finished his C Minor Violin Sonata, which had its first performance during the winter season at the Gewandhaus chamber concerts, Adolf Brodsky playing the violin and Grieg the piano. It was a beautiful performance and I was very enthusiastic, and after the concert I wrote Grieg an enthusiastic letter with my impressions, enclosing in the letter a sprig of heather which I had gathered on the Hardanger Vidder. Next day I was very much moved to see what a deep impression this had made upon him.