Hackett, Karleton Spalding was born on October 8, 1867 in Brookline, Massachusetts, United States. Son of Francis Wilber and Isabelle Izette (Spalding) Hackett.
Educated Boston and Roxbury Latin schools and Harvard University, class of ’91. Studied at Florence, Italy, 1889-1893, also at London and Munich.
Located at Chicago, 1893. Head of vocal department, Music School of Northwestern University, 1896-1911. Became head of vocal department, 1897, vice president, 1906, president 1932, American Conservatory of Music, Chicago.
Formerly music critic and contributor Chicago Evening Post, and The Chicagoan. Associate editor The Musician.