A student alongside Claude Debussy and a familiar of composers Johannes Brahms and Karl Goldmark, Basch-Mahler was a recognized and respected talent of the late 19th century Austrian-Hungarian music community.

[4][5][6] Her first big break came at the beginning of 1876 when she was twenty one and invited to perform with Adolf Wallnofer and Joseph Hellmesberger at the Musikverein, in what is now called the Brahmssaal.

The Fremden-Blatt critic went as far to say she was a "young, very talented pianist who, in addition to being very fluent, lets me praise many of her musical virtues".

In front of a large audience at the Kursaal she performed Beethoven's concerto in E flat which received a glowing review.

The gifted pianist has a brilliant technique, her stroke is concise, her piano playing full of mildness and softness, the performance safe and correct.

What Fraulein Mahler particularly emphasises is the objectivity of her game....We are convinced that the amiable artist is ahead of her colleagues, even the audience... and she fully deserved the thunderous and repeated applause which accompanied each of her performances.

Her reputation was growing and when at the end of the year she performed a benefit concert in aid of military invalids the advanced notices described her as a "piano virtuoso".

The Quartet consisted of three sisters—Fanni, Amalija and Maria—and a fourth singer called Marianne Gallowitsch, and were managed by their mother Ivanka Campa.

[13] This time the critics paid her more attention and complimented her as an "excellent pianist with a brilliant technique, beautiful and delicate touch".

Hugo Wolf observed"Frau Basch-Mahler played the piano in Schumann's Quintet in E Flat in such a way that she never got stuck or lost the beat.

[2] On 4 December 1883 she gave the first ever public performance of Brahm's Five Piano Studies no.2 as an interlude between choral numbers during a concert by the Vienna Male Choir.

"[16]In 1889 she performed a piece by Carl Maria von Weber called "Perpetuum mobile" in Gmunden that had been newly arranged by Brahms.

Volksconcerts were intended to combat the high cost of tickets and enable ordinary citizens the opportunity to attend.

On 25 June 1928 the President of Austria, Wilhelm Miklas, awarded Fanny with the title of Professor on the recommendation of the Minister of Education.

"The Federal President recently awarded title of professor to the excellent Viennese pianist Fanny Basch-Mahler.

On the occasion of the well-deserved award the beloved and esteemed artist received a lot of congratulations from all social circles.

Fanny married Dr. Ludwig Basch, the editor of the Illustrirtes Wiener Extrablatt [de], in the Stadttempel on 19 March 1882.

[32] After the Anschluss occurred Fanny moved into the Israelitische Kultusgemeinde (IKG) (Jewish Community of Vienna) Old Age Home on Goldschlagstraße with her husband Ludwig.

In July 1942 the IKG was forced to close down the Goldschlagstraße location and moved all the remaining residents to the Old Age Home on Seegasse [de].

As part of the final liquidation[33] of the Viennese Jews, IKG itself was closed down on 1 November 1942 and forced to hand over all its remaining assets to the authorities including the Old Age Home.