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The song "Boom Clap" is the lead single from Charli XCX's second studio album, "Sucker." It was released on June 2, 2014, and became a worldwide hit, reaching the top 10 in several countries, including the United Kingdom and the United States. The song is a pop-rock track that incorporates elements of electropop and synthpop, and its lyrics explore themes of young love and infatuation.