In 1919 she settled permanently in the United States, and married Jan Fresemann Viëtor, a Dutch businessman who was a skilled amateur violinist.
[3] After a successful career as a violinist,[4] in 1916 she played alongside Camille Saint-Saëns on piano during a tour in Argentina,[5] she decided to end this and dedicated herself completely to composing.
[3] Her compositions were performed in the same program as Charles Ives, Aaron Copland and John Philip Sousa by the National Gallery Orchestra in 1950.
[9] Lawrence A. Johnson calls one of her best known works, Primavera Lombarda (Springtime in Lombardy), "an intriguing moody Mediterranean tone poem".
The Foundation has published a book, The Story of Alba Rosa Viëtor: Violinist and Composer 1889–1979 (2009), which includes essays about her works by Paul Janssen and Peter Fraser MacDonald, as well as a list of compositions.