One was a juvenile delinquent. The other rapped with a delinquent named Juvenile. Only one of them, however, performs at Philips Arena with T-Pain, Keyshia Cole, Gym Class Heroes and Keri Hilson. Both LIL WAYNE and Louis Armstrong hail from the slums of New Orleans. And like jazz great Satchmo, Lil Weezy is hailed as a master of his craft, while simultaneously lambasted by critics for his borderline buffoonery. Lest we forget, ol' Pops caught much heat from the black power generation for skinnin' and grinnin' in 1969's Hello, Dolly! But here's the rub: Listen to Lil Wayne's codeine syrup-coated voice scratch and claw through a song like "Playing With Fire," and you just might hear the gravelly scat that made Armstrong more recognizable than his trumpet playing. Maybe it's just something in the water down there in the Big Easy. Dec. 31, 8:30 p.m. $49.75-$89.75. Philips Arena, 1 Philips Drive. 404-249-6400. www.ticketmaster.com.