Allan Arthur Willman (variant spellings Alan & Wilman; né Allan Arthur Simpkins; 11 May 1909 Hinckley, Illinois 7 May 1989 Cheyenne, Wyoming) was an American classical pianist, composer, music pedagog at the collegiate level, and longtime chairman of the Department of Music at the University of Wyoming. Willman was a vanguard creator and influential exponent of twentieth-century contemporary music. As chairman of the music department at the University of Wyoming, he is credited with rapidly expanding music arts within the institution. He led the development of a more comprehensive Music Department for aspiring academicians and professionals in performance, composition, education, and musicology. Between 1940 and 1950, enrollment in the Music Department quadrupled. Willman was founder of th