Progressive Rock, often abbreviated as Prog Rock, is a genre of music that emerged in the late 1960s and is characterized by its complex compositions, intricate instrumentation, and a focus on artistic expression. Bands like Pink Floyd and Yes pushed the boundaries of traditional rock music, incorporating elements from classical, jazz, and electronic music. The genre is known for its concept albums and lengthy tracks that often feature elaborate arrangements and philosophical lyrics. Progressive Rock has influenced many artists and continues to be celebrated for its innovation and creativity, making it a significant part of music history.