Borch played the cello. He studied for three years with Massenet and also at the
Valand School of Fine Arts in Sweden. During the 1890s he spent time variously as conductor of the
Christiania Orchestral Society and the Central Theatre in Christiana (now
Oslo), and was also a visiting conductor in various European countries. His reported conducting credits include the
Amsterdam Symphony Orchestra;
Brussels Opera Orchestra; Société Symphonique,
Lille; Crystal Palace Orchestra,
London; Harmonie Royale,
Antwerp; Gewerbehaus Orchestra,
Dresden; and the Musikforeningen of
Bergen (1898–1899). In 1901 Borch's patent application for a device to amplify the vibrations from a piano indicates he was living at the time in
Duluth, Minnesota. He spent some time in Europe in 1906 as conductor of the Lausanne Symphony Orchestra. He conducted the Grieg Jubilee Concerts in New York in 1907. By 1925 he was sufficiently prominent in the field to be described as one of "the three 'B's' of picture music", along with
Maurice Baron and
Irénée Bergé—"a formidable trio of expert writers". In 1920 Borch was reported as attempting to establish a grand opera company in
Boston, Massachusetts. Borch returned to Europe in 1921, settling in Sweden, where he was an arranger and musical contributor to the score of
The Saga of Gosta Berling (1924), starring
Greta Garbo. On 1 January 1925, the first day of radio broadcasting in Sweden, Borch led the Skandia Cinema Orchestra in Sweden's first broadcast of orchestral music. ==Personal life==