... should be studied in company with No. 6, in E flat minor. This reason is not patent. Emotions should not be hunted in couples and the very object of the collection, variety in mood as well as mechanism, is thus defeated. But Von Bulow was ever an ardent classifier. Perhaps he had his soul compartmentized. He also attempts to regulate the rubato—this is the first of the studies wherein the rubato's rights must be acknowledged. The bars are even mentioned 32, 33, 36 and 37, where tempo license may be indulged. But here is a case which innate ... — Chopin: The Man and His Music • James Huneker