Maria Breon is the vocalist of the symphonic power metal band HolyHell.She studied modern opera at the Baldwin-Wallace Conservatory of Music in Berea, Ohio.While touring in 2007, she sang the duet "The Phantom of the Opera", from Andrew Lloyd Webber's musical of the same title with Eric Adams of Manowar. The song has been included in HolyHell's first studio disc, Apocalypse (Magic Circle Music).