[5] At 15, he entered the Conservatory of Music in Milan and studied the violin, harmony, counterpoint and conducting with the most eminent teachers of that institution.
He returned to Europe, but then back to America, where he remained for three years as the head of the Violin School at the New England Conservatory of Music in Boston.
He also assumed the direction of the music at the Church of the Immaculate Conception and brought out many important sacred works for the first time in that city.
He returned to the United States in 1890 to become professor of violin at the Cincinnati College of Music, succeeding Schradieck, and remained in that position for six years.
The next important engagement of Campanari and his orchestra was in London, at the Imperial Institute, for a long and very successful season of nearly four months.
[12] With the same organization he appeared in Reading, Trenton, Wilmington, Washington and Baltimore for performances of Beethoven's "Ninth Symphony".
Owing to the serious illness of his wife, Persis Bell, an American lady and once a violinist of note, Campanari removed to California, but after her recovery, he resumed his work as a virtuoso and a conductor.