Soft Rock emerged in the early '70s, partially as a reaction to the extreme sounds of the late '60s. Soft rock was commercial and inoffensive, taking the sound of singer/songwriter and pop/rock but smoothing out all the edges. Bands like Bread, the Carpenters, and Chicago relied on simple, melodic songs with big, lush productions. Throughout the '70s, soft rock dominated the airwaves and it eventually metamorphosed into the synthesized sounds of adult contemporary in the '80s.