Mad Cool Festival in Madrid is staging its 10th anniversary celebrations with opening-day lineups featuring multiple well-known acts. Across reporting, the festival’s first day is described as kicking off with performances that include The Last Dinner Party and Wolf Alice, alongside other artists mentioned in coverage. One outlet highlights HotWax as part of the opening activities, with The War On Drugs also listed among the performers taking part on day one. Another source includes additional acts in its day-one roundup, naming Dogstar and Moby among the artists appearing during the festival’s start. Coverage for the festival’s first day also notes major headliner presence in the 2026 edition, specifically mentioning Foo Fighters in photo highlights. The reporting collectively frames the opening as a large-scale start to the multi-day event, emphasizing the variety of artists across different genres and the festival’s milestone 10th-year theme, while focusing on the performances taking place on its first day.