Louis Thomas organised exclusive concerts where Raymonde sang, accompanied by pianist Ennemond Trillat.

In Prague and Budapest she sang in opera houses, performing the leading roles in Mignon and Carmen.

Raymonde Delaunois never achieved the status of 'opera diva’ and remained within the range of appreciated actresses, without reaching the top position.

Delaunois returned to France, and appeared in title roles of operas like Carmen, Mignon and La fille de Madame Angot (Alexandre Charles Lecocq).

[1] In 1914, despite the War, Raymonde signed a contract with the Metropolitan Opera New York City, where she found a European atmosphere, with Giulio Gatti-Casazza (1869–1940), former director of La Scala, Arturo Toscanini (1867–1957) as conductor, Enrico Caruso (1873–1921) and Feodor Chaliapin (1873–1938), after them Beniamino Gigli (1890–1957) as the prominent male stars.