The lineup of Barcelona's Primavera Sound Festival is always stacked. It's one of the best-booked festivals in the world, always boasting an impressive and diverse array of headliners atop a sprawling lineup that can hold all sorts of surprises. Conflicts are, counter-intuitively, less of a topic with Primavera because at a certain point you have to surrender, accept that there's no physical way to see all the good stuff, and just follow wherever the night takes you. It doesn't really matter what that end destination is -- even if you don't have a plan, you'll stumble into something worth watching.