From General Franco to Johan Cruyff, and from a pig's head to the Messi v Ronaldo rivalry - Spanish football journalist Guillem Balague joins Mark Pougatch and Paul Hayward to explain how El Clasico became the biggest club match in the world.
And it's not all about fascism versus socialism, underdog versus serial winner...You might think you know the story but believe us, there's a lot of myths to be busted.
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Executive Producer: Adonis Pratsides
Producer: Sophie Penney
Head of Podcasts: Factual: Al Riddell
Director of Podcasts: Vicky Etchells