Angela Diller (August 1, 1877 – May 1, 1968)[1][clarification needed] was a pianist and music educator.

Diller taught herself how to play the piano at an early age.

Her older sister Ellen taught her how to read sheet music.

Diller and Quaile wanted books for the teachers at the school and wrote the Diller-Quaile Series.

[2] Near the end of her life, she lived in the Courtland Gardens Health Center in Stamford, Connecticut.