Cabell received a Ô£10,000 cash award, engagements with the BBC and the Welsh National Opera, and a crystal trophy, presented by Joan Sutherland, the competition's patron.
A recent graduate of the Lyric Opera Center for American Artists, the Lyric Opera of Chicago's training program, Cabell has appeared with the Oregon Symphony, the Chicago Symphony, and the Florida Orchestra.
Ha-Young Lee, a Korean soprano and a member of the Royal Opera House Vilar Young Artists program, won the audience award. English tenor Andrew Kennedy, also a member of the Vilar Young Artists program, won the Rosenblatt Recital Song Prize in a competition that concluded on June 17.
The jury for the competition included mezzo-soprano Marilyn Horne, soprano Anne Evans, baritone Sergei Leiferkus, and Brian McMaster, director of the Edinburgh Festival. Anthony Freud, general director of the Welsh National Opera, was the jury's chair.
Founded in 1989, Singer of the World is held every other year. Previous winners include soprano Karita Mattila, baritone Dmitri Hvorostovsky, and soprano Lisa Gasteen. In 1989, baritone Bryn Terfel won the prize for art song (then called the Lieder Prize), but was bested by Hvorostovsky in the main competition.