[4][5][6] After returning to the U.S., Ross toured with and accompanied singers such as Katherine Fisk, Blanche Hamilton Fox, Jeanne Gerville-Reache, Ernestine Schumann-Heink, and Regina Vicarino, as well as cellist Elsa Ruegger and vioinist Ignaz Heroldi.
In 1923, she composed new music for the outdoor performance The Pilgrimage Play: The Life of Christ by Christine Wetherill, incorporating Hebrew chants, scales, and instruments like the shofar.
[4] She helped raise money to build the Hollywood Bowl and gave public lectures about the music played on its summer concert series.
[9] In 1928, she chaired the National Federation of Music Clubs American Composers group, as well as the Hollywood Bowl Annual Composition Prize Committee.
[10][6] In her role as president of the Los Angeles Pro Musica chapter, she helped sponsor early performances of Arnold Schoenberg’s music.