Conceptual and performance art emerged in the 1960s and 70s, challenging traditional art forms. These movements prioritized ideas, actions, and processes over finished objects, often using language, the artist's body, or everyday materials as mediums. Artists like Marcel Duchamp, John Cage, and Marina Abramović pushed boundaries, exploring themes of dematerialization, institutional critique, and audience participation. These practices continue to influence contemporary art, emphasizing experimentation, social engagement, and the blurring of art and life.