Folded shapes, clear abstract lines and a depth of form are used by the artist to create this controversy. Her public statements always pointed to a connection to nature rather than the latter, but many still remain unconvinced as to her key intentions.
Around the time that O'Keeffe's career had taken off, she will have taken influence from several European artists who were trying to change the accepted balance of figurative and abstract art. Wassily Kandinsky and Piet Mondrian were both from the new school of thought, where abstract should be more dominant across a work and they produced several writings on this.
Georgia O'Keeffe held a key contact with avant-garde circles in New York and this would likely have drawn the work of these two artists to her attention.
Blue and Green Music is another fine example of her use of the abstract, though many art critics believe the main success of her career was when she still used a clearer link back to the original inspiration of each artwork, be it leaves, skulls, landscapes or flowers.
The more abstract work of O'Keeffe, through paintings like Grey Lines with Black, Blue and Yellow, are known to have been particularly influential on leading American artists who followed on in the coming generations.