Progressive rock
emerged in the late 1960s, blending rock with classical, jazz, and experimental influences. Known for complex compositions, shifting time signatures, and conceptual themes, it pushed musical boundaries beyond standard song structures. Bands like King Crimson, Yes, and Pink Floyd pioneered the genre, crafting ambitious albums with intricate instrumentation and philosophical lyrics. Prog rock remains influential, evolving through various subgenres like neo-prog, prog metal, and avant-prog.