It's fascinating to watch how the clientele at the Carioca Cafe, better known as Bar Bar, changes over the course of a day (and three happy hours) — especially when this classic dive, one of the last left downtown, brings in live music. Get there a few hours before a gig and you'll find some of Denver's finest barflies, a few of which might have been there since the doors opened that morning. As the hour gets later, an assortment of hipsters, punks and rockers mixes in with those barflies, the music gets loud, and the next thing you know, you're in a veritable drinker's nirvana. Dive, he said.