Alt Rock, or alternative rock, is the genre that emerged in the 1980s and 90s as a counter to mainstream rock, characterized by its eclectic influences and experimental approach. Pioneered by bands like R.E.M., Nirvana, and Radiohead, alt rock blends elements of punk, post-punk, and indie, creating a diverse and innovative sound. Its appeal lies in its authenticity and willingness to push musical boundaries. Today, alt rock remains a vital and influential genre, with bands like Arctic Monkeys, The Black Keys, and Tame Impala continuing to explore new creative directions and captivate listeners.