Mary Hallock-Greenewalt

Inventor and pianist (1871-1950) / From Wikipedia, the free encyclopedia

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Mary Elizabeth Hallock-Greenewalt (Sept. 8, 1871 – Nov. 27, 1950)[1][2] was an inventor and pianist who performed with the Philadelphia and Pittsburgh symphonies as a soloist. She is best known for her invention of a type of visual music she called Nourathar.

Portrait of Greenewalt by Thomas Eakins

Thomas Eakins painted her portrait in 1903, currently in the Roland P. Murdock Collection of the Wichita Museum of Art.