Pyrotechnics lit up the Capital STB stage as Martin Garrix set the place on fire This image appears in the gallery:One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015 93. Pyrotechnics lit up the Capital STB stage as Martin Garrix set the place on fire Picture: Joe Okpako 171 images See the full gallery: One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015