Interstellar Sevilla brings two days of pop, indie, rock, and indie pop music to Seville, Spain on May 15-16, 2026. The festival features headliners Siloé and Crystal Fighters, alongside notable performances from Xoel López. With 28 Spanish artists across the lineup, this indie pop and pop rock festival showcases the vibrant Spanish music scene. Fans of indie and pop rock music will find a comprehensive celebration of contemporary Spanish artists at this two-day event.