” Maria Callas “. Maria Callas my operatic heroine extraordinaire. This painting was inspired by a friend’s original huge oil painting of the same name. This is my impression of Maria Callas Commendatore OMRI. Maria was an American-born Greek soprano who was one of the most renowned and influential opera singers of the 20th century. Many critics praised her bel canto technique, wide-ranging voice and dramatic interpretation. Price include frame.