[1] She studied piano at the Sherwood School of Music in Chicago, and with Varette Stepanoff, a follower of Theodor Leschetizky, in Germany.

She accompanied German singer Johanna Gadski in Chicago in 1904,[3] and performed with Ernst Kunwald in Berlin in 1908.

[4] Rider-Possart played at the Maine Music Festival in 1913,[5] and with the Calgary Symphony Orchestra in 1914.

[19] Rider-Possart also wrote music,[3] and recorded some player piano rolls for the Wilcox & White Company.

[20][21] She was a social friend of many musicians in Los Angeles, including Leopold Stokowski.