How did American music influence Piet Mondrian’s late style?

After moving to New York City in 1940, Piet Mondrian’s artistic style underwent a significant transformation influenced by the city's vibrant energy and the new rhythms of American music.1

This influence prompted him to move away from the austere, continuous black lines that had characterized his earlier work. Instead, he began replacing these lines with coloured bands. He further evolved this approach by substituting the continuous flow of those bands with a series of small, rhythmic rectangles.1

These changes resulted in a new sense of vivacity and movement in his late masterpieces, such as Broadway Boogie Woogie and the unfinished [Victory Boogie Woogie]. Through these works, Mondrian expressed a joyous, autonomous movement of colour blocks that reflected the rhythmic vitality he discovered in his new environment.1