When it comes to cranking out the hot, sweaty, swamp-rock jams of New Orleans, few groups can do it like the Radiators. They've been playing together for 30 years now, and most music critics consider them to be the longest-standing rock band in New Orleans music history. Audiences overwhelmingly continue to support the Radiators, which says a lot, considering music is practically a religion in that city. When they come to town this weekend, they'll play a two-night stint in Delray for their 30th-anniversary tour, but don't let the big three-oh fool you. They've got plenty of soul left in their bones and can still rawk out, smarter, faster, and better than they did three decades ago. You can expect plenty of "Fessheads" and "MonkeyKrewe" fans to be in attendance, and if those terms are unfamiliar to you, head to either of their shows and you'll quickly find out how seriously folks from New Orleans take this type of music.