her soprano voice was noticed by the opéra de paris who immediately engaged her. rose féart became one of the most important opera singers for the great repertoire, especially in wagnerian roles, and worked with composers of her time such as massenet, fauré, debussy, césar franck, and andré caplet. her career developed quickly, in operas and concerts, and lasted 20 years, in france and switzerland as well as in other major opera houses in europe.