Pianist

Coen graduated from the Conservatoire de Paris, where she studied piano with Élie-Miriam Delaborde. She gave her first known concert in the Kurhaus in Scheveningen in 1896.^[7] At 17 years of age, she played the Hungarian Rhapsody no. 11 (Liszt) and the Capriccio Brillant (Mendelssohn), accompanied by the Berlin Philharmonic Orchestra under the direction of Frans Mannstädt. Her future husband, Jacques van Lier, played 2nd cello that afternoon. Shortly afterwards, she moved to Berlin. Coen was solo-pianist in a concert of the Berlin Philharmoniker conducted by Josef Řebíček, performing the Piano Concerto (Schumann).^[8] The next year, Coen obtained a contract for a series of 45 concerts throughout Germany.^[9] With her fiancé, she was part of a chamber music trio, with violinist Margarethe Baginsky. The German newspaper "Neuen Zeitschrift für Musik" found it a worrisome sign of possible times ahead, should women's rights activists get their way, that the two women overpowered the man.^[10] In April 1905, Coen and Van Lier gave concerts in Leipzig and Erfurt with the German contralto Grete Hentschel. They opened with the Variations on a Rococo theme (Tchaikovsky). The critics were especially pleased with Coen's playing.^[11] Coen also tried her hand at composing: between 1896 and 1906, three of her compositions were published in Paris in the series "Pensée: pour piano".^[12]

Coen became famous as collaborative pianist and répétiteur. As early as 1908, she accompanied Alexander Heinemann on a tour through the Netherlands and England. Her debut in New York was in Carnegie Hall in January 1915, when she supported Olive Fremstad on the piano.^[13] She became the official pianist of Leon Rothier of the Metropolitan Opera with whom she toured Canada.^[14] In 1920, Coen spent nine weeks on tour with Marie Rappold, including Texas, Missouri, Oklahoma and Kansas.^[15] In addition to serving as Rappold's accompanist on the piano, Coen performed as a soloist, playing Rhapsody No. 11 and Consolations (Liszt) as well as Poèmes by Dubois, music that she frequently performed, that was sometimes complemented by encore performances of Waltz in C-sharp minor (Chopin) and the Gavotte from Iphigénie en Tauride (Glück) in the arrangement by Brahms. In 1929, she accompanied Rappold for concerts in the Netherlands, the birthplace of Coen's parents and grandparents. They played the Koninklijk Concertgebouw and Diligentia.^[16]

Opera conductor and vocal coach

Article in The New York Times, February 8, 1917, p. 10

Coen was reportedly the first woman in the US known to conduct an opera, according to the New York Review (February 10, 1917) in an article entitled, “Woman Conducts Carmen Performance at Garden Theatre: Mme. Coen is First of Sex to Wield Baton in Grand Opera in America”, which quotes Coen's response to a question about her dress:

An evening gown would be out of place. Woman invades the orchestra pit not with the idea of making a sartorial display of herself, as is the case in so many instances where the box of the opera house is concerned. I want to attract attention solely by the caliber of my reading of the score of Carmen. There is not a role in the opera in which I have not coached singers who are among the foremost exponents of those particular roles, and this, I believe, gives me a greater grasp of the possibilities of the score, than perhaps some conductors display

The opera was staged by the Cosmopolitan Opera Company and featured Marta Wittkowska as Carmen, Enrico Arenson as Don Jose and Auguste Bouillez as Escamillo.^[17]

Among the singers who coached with Coen were Marion Telva, Julia Culp, Jeanne Gordon, Carl Jörn, Orville Harrold, Marie Tiffany, Geneviève Vix, Claire Dux and many others.^[18][19]

Her career as conductor continued in 1921 when she worked with Leon M. Kramer and conducted La Juive, at the Lexington Opera House in New York under the auspices of the Jewish American Opera Company, the first time a Grand Opera was performed in the US in Yiddish.^[20] After this, Coen focused on her role as vocal coach until in 1944 when she became the musical director for her third opera, Engelbert Humperdinck´s Hansel and Gretel, presented by the University of Miami School of Music, where she had worked since 1943 as a vocal trainer.^[21]

Coen died in Miami, Florida, in 1952, at age 73.