She appeared in Kabarett, and toured Europe giving performances accompanied on the piano by her husband Ralph Benatzky.
She studied singing with the Schubert singer Viktor Heim; she then turned to Kabarett, and appeared in establishments in Vienna, from 1909 to 1912 at Hölle [de], and from 1912 at Simplicissimus.
He wrote about 500 songs for her, and accompanied her on the piano; together they toured Germany, Switzerland, Italy and England.
[1][2] Her style of presentation was based on Kabarett in Munich (in particular the venue Die Elf Scharfrichter [de]) and in Vienna (Cabaret Fledermaus [de]).
[2] In 1921, Selim and Benatzky performed to great acclaim at the Deutsches Theater in Berlin, and from that time the city became important in their work.