Just for the record, this is decidedly not a jazz town. That said, here's a tip: You don't know what you've been missing. In Europe, Japan and a few more enlightened pockets inside the States, appreciation for jazz rarely has been greater, and with good reason. It's a far fresher genre than you know, especially if you limit your listening to the pabulum on KYOT-FM and the wonderful if predictable old-school fare offered at nights on KJZZ. If you'd like to see what's really up in jazz -- we're talking such artists as Greg Osby, Cassandra Wilson and Avashai Cohen, as well as such masters as Miles Davis, Duke Ellington and John Coltrane -- head to any of the four locations of Zia Records and start digging. They've got a great selection of used stuff, with an adequate number of new CDs on the shelf. For Phoenix, that is.