Thayer, William Armour was born on October 5, 1874 in Brooklyn, New York, United States. Son of Joseph S. and Jane H. (Brown) Thayer.
Graduate Adelphi Academy, Brooklyn, 1892. Pupil of John Hyatt Brewer (organ), Dudley Buck (theory), John Dennis Mehan (voice).
Began playing organ at 16. Director Coral Society concerts, 1898-1899. Organist, St. James’ Protestant Episcopal Church, Brooklyn, 1893-1914, St. Mark’s Methodist Episcopal Church, Flatbush, 1914-1920, Emmanuel Baptist Church, Brooklyn, since 1920.
Professor music, Adelphi College, since 1907. Conductor Apollo Club, Brooklyn, since 1928.