Almost Slim is an authority on New Orleans R&B, Louisiana zydeco and blues. A legend for his vast, opinionated wealth of knowledge, we asked him to make some recommendations for the festival-goer new to this area's harmonic resources. Here are Slim's top picks.

There's probably no way you can't have fun at the New Orleans Jazz & Heritage Festival—well, I guess you could lose your wallet or get your car towed away—but there are certainly ways to compound your enjoyment. Here's how I...