The Valencian band La Gossa Sorda is the headliner of the concerts on September 11th. The group, which is starring a return to the stage after ten years of absence, will perform as part of the Festa per la Llibertat (Freedom Festival) by Òmnium Cultural, on passeig Lluís Companys in Barcelona. The group will play at 9:30 PM, closing a musical program that will also feature DJ Trapella (7 PM) and DJ-KZU (11:45 PM). Throughout the day, cultural and advocacy activities will take place. Òmnium Cultural will hold its central political event for the Diada celebration at 12 PM. A new edition of MerCat will also be held, a fair of country proposals with dozens of companies, organizations, and activities.

The celebration of Catalonia's National Day will kick off on September 10th with a new feature: the solemn flag-raising ceremony at the Parliament, presided over by the Speakers of the Parliament and the Generalitat, Josep Rull and Salvador Illa, and the Mayor of Barcelona, ​​Jaume Collboni. The flag will fly year-round next to the Palau del Parlament. In the afternoon, the ANC (Catalan National Assembly), Òmnium (Union of Catalonia), the Council of the Republic, the Intersindical (Union of Trade Unions), and the Ciemen (Ciemen) will promote the traditional Diada demonstration to denounce, this year, tax plunder, the minoritization of the Catalan language, and the denationalization of Catalonia.