Sophie Keller

He later sent her to Italy where she was taught by Francesco Lamperti in Milan and Pietro Romani in Florence.

[3] After appearing in her father's concerts at the Cæcilia Society, she made her début at the Royal Theatre when she was 19 as Agathe in Carl Maria von Weber's Der Freischütz.

[2] In 1888, together with Fanny Gætje, she founded Kjøbenhavns Sang- og Musikkonservatorium for Damer (Copenhagen's Song and Music Conservatory for Ladies).

In connection with her jubilee in 1894, she was given the status of Kongelig Kammersanger (Royal Chamber Singer).

She is also remembered as a teacher, with students including Elisabeth Dons, Emilie Ulrich, Ida Møller, Fanny Gætje and Ingeborg Steffensen.