James Thomas Quarles was a 20th-century American organist, educator, and academic. He was National President of both the Music Teachers National Association and music fraternity Phi Mu Alpha Sinfonia. In his long tenure he taught at Lindenwood University, Cornell University, and the University of Missouri. He was the founding dean of the University of Missouri School of Fine Arts. In 1905 he wrote one of Cornell's school songs "Cornell Hymn" In the 1920s he edited a compilation of Missouri school songs and was advisor to the Zeta Chapter of Phi Mu Alpha Sinfonia.
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