Born: May 15, 1842, Albany, New York.
Died: March 16, 1909, Auburn, New York.
Buried: Fort Hill Cemetery, Auburn, New York.
Isaac was the son of physician John Ostrom Flagler and Christina Van Vleck, and husband of Henrietta Flagler.
His early education was at the Kinderhook and Albany academies. He studied law for four years at Poughkeepsie, but gave it up for music.
He first studied music with Henry Beale, organist of Joseph’s Church in Albany. He then went to Europe, where he studied under Édouard Batiste in Paris and Gustav Martal in Dresden.
Returning from Europe, he became organist and choirmaster at the Second Reformed Church in Poughkeepsie. He later filled the same position at Plymouth Church, Chicago, Illinois, and at the First Presbyterian Church, Auburn, New York.
Flagler distinguished himself as a teacher and lecturer, teaching music and giving lectures at Syracuse University, Cornell University, the Utica Conservatory of Music, and the Ithaca Conservatory of Music. He was also organist and musical lecturer at Chautauqua for 19 years.
He performed as solo organist at the Chicago, Buffalo, and St. Louis expositions, and played at the Trocadéro in one of the Paris expositions.
One of the founders of the American Guild of Organists, Flagler had a national reputation as a concert organist. His repertory was very extensive, comprising all the works of the great masters.
He is a wonderful player and seems to bring a spell over his audience, the highest tribute that can be paid to his ability. He never fails to please, never tires, and always instructs while delighting his hearers.
His playing is always brilliant and remarkably facile. He has not many equals and no superiors in the United States.
In his review of Flagler’s book The New Era of Song, Albert Shaw wrote,
Mr. Flagler aims to strike the golden mean between
Gospel hymn trashand the elaborate classicism which hinders congregational singing.
Flagler was an eminent composer of church music. His other works, which were widely read and practiced, include:
If you know where to get a good photo of Flagler (head & shoulders, at least 200×300 pixels),