Which Georgia O'Keeffe painting from 1919 uses blue and green forms to suggest music?

Georgia O'Keeffe's 1919 painting using blue and green forms to suggest music is Blue and Green Music.

Blue and Green Music is an abstract oil painting made around 1919–1921. It uses flowing, overlapping forms and saturated colors rather than depicting a recognizable object or scene. The title points toward O'Keeffe's interest in translating the emotional effect of music into visual form.

The painting belongs to an early period when O'Keeffe was developing an abstract language based on charcoal drawings, watercolor studies, and simplified shapes. Her work from these years helped establish her reputation before the enlarged flowers and New Mexico imagery became especially associated with her name.

The title is important because O'Keeffe created several works in which color and form carry an evocative, nonliteral meaning. Blue and Green Music is not a portrait of a musician or an image of an instrument; it is an abstract composition.