This year Primavera Sound celebrated its 15th birthday, in which time it has established itself as one of the foremost music festivals worldwide. Every year festival curators have aimed to deliver a top class line-up offering a diverse range of musical talent. Always interesting, they manage to blend exciting contemporary artists with auspicious greats who have paved the way. Scanning a list of legendary acts who have graced the Primavera stage is overwhelming; it’s like a who’s who of groundbreaking artists from the past 50 years, including Lou Reed, Iggy and the Stooges, Patti Smith, Television, Motorhead, My Bloody Valentine, Pavement,…