- Profession: Soprano.
- Relation to Mahler: Worked with Gustav Mahler.
- Correspondence with Mahler:
- Born: 27-01-1855 Heidelberg, Germany.
- Died: 16-02-1947 Salzburg, Austria.
- Buried: 00-00-0000
- 1889 Concert Budapest 13-11-1889 – Lieder fur Singstimme, Des Knaben Wunderhorn (Premieres).
- 1889 Concert Budapest 11-12-1889.
Bertha Schwarz, often known by her stage name Bianca Bianchi, was a coloratura soprano opera singer of the late 19th century. Her greatest successes were at Vienna.
Bertha Schwarz was the daughter of actors who worked at nearby Mannheim. As an opera singer, she was for many years a prominent member of the company of the Vienna Court Opera, where her fame was such that an asteroid discovered on 4 September 1880 was named 218 Bianca in her honour. Two years later Johann Strauss II was inspired by her to compose his Frühlingsstimmen waltz for orchestra and solo soprano voice, still familiar today.
Although based in Vienna, Bianca Bianchi sometimes performed in other cities of the German and Austrian empires, notably Hamburg, Karlsruhe and Budapest. In 1894 she married the impresario Bernhard Pollini (1838-1897), who had been her manager.