On Saturday, June 28th, The Telegraph Building in Belfast opens its doors for the Boiler Afterparty, bringing an explosive night of cutting-edge techno and fervent crowd energy. Led by Galway’s genre-defying KETTAMA, the lineup assembles a cast of in-demand selectors pushing the tempo and spirit of Ireland’s scene. Bella Claxton returns with her dynamic blend of house and techno, while CAOIMHE reshapes the dancefloor with deep, leftfield grooves.

Frederic. brings his sharp production and driving rhythms, and HAZE DJs keep the night’s pulse relentless with high-intensity sets. hotline. curates a forward-thinking soundscape, and Mija’s energetic selections round out a diverse, high-voltage bill. Set against the raw industrial backdrop of The Telegraph Building, every artist brings their own flavour for an unmissable celebration of underground electronic music. Early booking is strongly advised—spaces are limited, and anticipation runs high for one of Belfast’s most talked-about events of 2025.