Bucket hats abounded. Adidas tracksuits, soccer jerseys, band merch old and new: Downtown Chicago was swarming with Oasis fans, looking the part. As the throngs spilled out of the pubs, pedicabs blasted the group’s music while whisking ticketholders toward Soldier Field, while most people made their way on foot across the city’s Museum Campus in the Lake Michigan breeze. It felt like a holiday, and in some way it was: The first Oasis show in the United States in nearly 17 years.