Noise rock is a subgenre of alternative rock that emerged in the 1980s, characterized by its use of dissonant sounds, feedback, and unconventional song structures. Bands often incorporate elements from punk rock, avant-garde, and industrial music, creating a raw and chaotic sound. The genre challenges traditional musical norms, focusing on texture and atmosphere rather than melody. Key bands in the noise rock scene include Sonic Youth, The Jesus Lizard, and Swans. These groups often explore themes of alienation and urban life, using their music to evoke intense emotional responses. Noise rock remains influential, impacting various genres and inspiring new artists.