In our Into the Night series, we follow a DJ for one whirlwind evening all the way from sunset to the post-party afterhours.If you made it out to our bonkers launch party in June, you've already grooved to the silky house tunes of Duke Dumont, the London-based producer behind the infectious hits "Need U" and "The Giver." Dumont makes the kind of plump, ribcage-rattling beats even your grandma would swing her hips to, backed by throaty vocals and impecabbly tight structures. We tagged along as he touched down in Barcelona to play a show in an honest-to-god castle, grabbed dinner in a local market, and finished off with a B2B DJ set with his friends from Hot Chip.