The document provides an overview of the genre of alternative rock music. It discusses the origins and development of alternative rock in the 1980s as an underground genre. It outlines some key characteristics of alternative rock bands and sounds. The document also profiles several influential alternative rock artists and bands that achieved mainstream success, including R.E.M., Nirvana, Radiohead, The White Stripes, and Coldplay. It discusses the rising popularity of alternative rock in the 1990s and some factors that led to a decline in popularity towards the end of that decade.