The recorded lesson focuses on the concept of Abstract Art, primarily highlighting the American artist Jackson Pollock. Pollock, initially not an abstract artist, became a key figure in Abstract Expressionism, revolutionizing techniques with his innovative “drip painting” method that involved layering colors directly onto a canvas placed on the floor. The discussion also briefly touches on other artists such as Mark Rothko, emphasizing the importance of this movement in art history, particularly in the United States.