Lasers, pyrotechnics and serious beats, Avicii smashes his closing set for the Summertime Ball This image appears in the gallery:One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015 169. Lasers, pyrotechnics and serious beats, Avicii smashes his closing set for the Summertime Ball Picture: Danny North 171 images See the full gallery: One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015