"progressive rock"の定義と意味

What is "progressive rock"?

Progressive rock is a genre of rock music that developed in the late 1960s and early 1970s. It is known for its ambitious and experimental approach, incorporating complex song structures, unusual time signatures, and extended instrumental sections. Progressive rock often features elements from classical, jazz, and avant-garde music, creating elaborate compositions and concept albums with themes that can be philosophical, fantastical, or abstract. The genre emphasizes technical proficiency, with a focus on creating a rich, immersive listening experience through innovative arrangements and multi-layered sounds.