Free jazz is a genre of music that emerged in the late 1950s and is characterized by its improvisational nature and lack of traditional structure. Unlike conventional jazz, which often follows specific chord progressions and rhythms, free jazz allows musicians to explore sounds and emotions without predefined rules. This style encourages individual expression and spontaneity, often resulting in unpredictable and innovative performances. Key figures in free jazz include musicians like Ornette Coleman and John Coltrane, who pushed the boundaries of jazz by experimenting with new forms and techniques. Free jazz often incorporates elements from various musical traditions, making it a diverse and evolving genre that continues to influence contemporary music.