Is it possible to attend one of the great festivals of the Costa Brava without going through the box office?

Source Summary

The Platja d'Aro Jazz Nights were born in 1998 as a bold venture, when the major summer music festivals on the Costa Brava had not yet emerged and when jazz in Catalonia was a minority musical genre. Almost thirty years later, this jazz event in Platja d'Aro has consolidated and is among the great summer festivals on the Costa Brava, all characterized by a high-level program performed in unique settings (by the sea, in a historic castle, in charming village squares) and with ticket prices often not affordable for all. The Platja d'Aro Jazz Nights, however, maintain a feature that differentiates it from the rest: all concerts have been and always are free.