Complex sentence: Aguirre was born in San Sebastián, living there until he was 15 years old, when he moved to Zaragoza and joined a band named Días de vino y rosas (Days Of Wine And Roses) there, who released an album in 1990.
Split into simpler sentences: Aguirre was born in San Sebastián, living there until he was 15 years old. He moved to Zaragoza, and joined a band named Días de vino y rosas (Days of wine and roses) there, releasing an album in 1990.