The Clash were an English punk rock band formed in London in 1976, known for combining punk energy with reggae, ska, rockabilly, and experimental influences. The classic lineup featured Joe Strummer, Mick Jones, Paul Simonon, and Topper Headon. Their album London Calling is widely regarded as one of the greatest rock albums of all time, featuring a diverse range of styles and socially conscious lyrics. Songs like Should I Stay or Should I Go and Rock the Casbah helped them reach global audiences. The band became symbols of political expression and musical innovation within punk culture.