自由爵士 (Free Jazz) is a genre of music that emerged in the late 1950s and 1960s, characterized by its improvisational style and lack of fixed structures. Musicians often explore spontaneous expression, allowing for a wide range of sounds and emotions. This genre challenges traditional jazz norms, focusing on individual creativity and collective interaction among performers. Key figures in 自由爵士 include Ornette Coleman, whose album "Free Jazz" is considered a landmark recording, and John Coltrane, known for his innovative approaches to improvisation. The genre has influenced various music styles and continues to inspire artists seeking to push the boundaries of musical expression.