Budapest: 1934. 11. 7.
Bartok thanks to the recipient's earlier letter. He apologizes for the late reply, but on the one hand he was very busy and on the other hand he wanted to wait for the publication of a study of folk music, a copy of which he would send to Katzarova's boss, Vasil Stoin, with a German summary. He expresses his gratitude for the kind offering of an early work by Stoin. He mentions at the end of the letter that he also writes about Bulgarian rhythm in his latest essay.