Has been called the most important Czech woman composer of the 20th century. Began composing at age nine (her father was the composer and pianist Václav Kaprál). At age 15 she began studying at the Brno Conservatory. She continued her studies in composition withVáclav Talich, Bohuslav Martinů, and Nadia Boulanger.
During her short life she composed many works, including solo instrumental, vocal, and orchestral pieces. She fled from her homeland to France in 1940.