Charli XCXMusic PerformanceTV Appearance Boom Clap performance 7 Jul, 2014 Charli performs the single on Late Night With Seth Myers. Add your comments below... Latest Posts MTV Movie Awards performanceOn Air interview Charli XCX interview Nylon coverNKD coverMeaning of XCXBoom Clap performanceFancy - Late Night With Seth MeyersFancy - Gary Oldman coverBoom Clap - Aeroplane remix