Marie, Ontario, she was a student of John Blackburn in the Sault from 1945 to 1953 and with George Lambert at the Royal Conservatory of Music in Toronto.
She began a long association with the CBC after winning an Opportunity Knocks award in 1948.
She was cast in CBC's North American radio premiere of Peter Grimes on October 12, 1949 and also in the repeat broadcast in 1952.
In 1954 Hume moved to England, where she served from 1955 to 1970 as principal soprano soloist of the BBC Light Music department, giving over 1800 radio and TV performances under the direction of Robert Farnon, Sidney Torch, Carmen Dragon, and others.
She also sang the role of Kate in a recording of Gilbert and Sullivan's The Yeomen of the Guard (1958, 2-HMV ALP-1601-2/EMI EX-749594/EMI CDS7 47718-8).