Louise Sahlgreen

Louise Rudolfine Sahlgreen (née Marcher; 17 September 1818 – 15 August 1891) was a Danish operatic soprano.

As a result of her plain looks, she did not reach prima donna status but nevertheless had a powerful soprano voice which extended to contralto, allowing her to perform a wide variety of roles.

She went on to take other boy roles including the page in Meyerbeer's Les Huguenots and Cherubino in Mozart's The Marriage of Figaro.

As a result, she was engaged by the company as a singer where she proved most successful taking on comic "madam" roles in operas such as Soler's La capricciosa corretta and C. E. F. Weyse's Et Eventyr i Rosenborg Have.

Every year from 1851 to 1869 she was a soloist in the passion concerts performed in the Church of Our Lady by members of the Royal Opera.