During his research, Christopher Hogwood came across an unpublished source which had not been taken into consideration for any previous edition. While on a concert-tour in 1853 with the violinist Ede Reményi, the young Brahms visited Arnold Wehner, the Music Director of the Göttingen University. In Wehner#s #Album Amicorum# # which included contributions from Robert and Clara Schumann, Mendelssohn, Jenny Lind, Rossini and Liszt # Brahms had notated a short piano piece. The source consists of a one-page autograph of this literal #Albumblatt# (untitled by Brahms). The composer used it 12 years later # revised and transposed from A minor to A-flat minor # in his Horn Trio.