The term 'Twittering Machine Artist' refers to the work of Swiss-born artist Paul Klee (KLEE, 4 letters). Klee was a prolific artist who worked in a variety of media, including painting, drawing, and printmaking. He is best known for his abstract works, which often featured whimsical shapes and bright colors. His most famous work, 'Twittering Machine, ' is a painting that depicts a bird-like machine with wings made of gears and wheels. Klee's work has been highly influential in the development of modern art.