 A noticeable difference between these manuscripts and the famous version of Yepes is the inverted arpeggio.Both manuscripts, though believed to be from the late 19th Century, have not been formally dated, and are not believed to be in the handwriting of the alleged authors, but rather are believed to be copies made by students or musicians (also note that Fernando Sor died in 1839).The Ukrainian folk song Nich Yaka Misyachna ("Beautiful Moonlight") could be a precursor of the piece.