In 1879 Strong traveled to the
Leipzig Conservatory in Germany, where he became a pupil of
Salomon Jadassohn and
Richard Hofmann together with many European musicians who became prominent in the next decades. He composed his third symphonic poem,
Undine, Op. 14 in 1883. In 1886 Strong moved to
Wiesbaden, where he became close friends with American composer
Edward MacDowell. There he composed
The Haunted Mill and completed his
Symphony No.2 in G minor in 1888. After his 1891 return to the United States, Strong taught counterpoint and composition at the New England Conservatory in Boston. He disliked the work, and his health suffered. In 1897 he moved back to Europe to
Vevey, Switzerland, on
Lake Geneva. For the next several years he studied watercolor painting seriously and worked as professional artist. About 1912, he moved to Geneva, where he began to compose music again. He lived in Geneva for the rest of his life and painted seriously for 30 years. ==Private life==