Swing & Sound is a completely fictional contemporary jazz festival that takes place every fall in Brooklyn, NY. It's "known" for its contemporary jazz music, amazing dancing and dance contest, and thematic costumes.
If it were real, it'd be a big hit with the 30's and 40’s crowd looking for a good time. The festival is extra unique because it is device-free, since organizers want the attendees to enjoy everything it has to offer musically. Attendees check their phones and devices at the doors in a branded bag, and use their QR codes to get around the arena. QR badges have drink tickets, coat-check info, and bag retrieval but are also used to tag festival-goers in things like photo op kiosks so you can get that instagram-y photo without being taken out of the swing and the sound.