The great thing about Jazzumentary, which you can hear from 7:00 to 8:00 p.m. every weekday on 88.9 FM, is that it changes format, rotating one of five different syndicated shows every day. On Mondays, it's Portraits in Blue, hosted by famed blues producer Bob Porter, who will enlighten you with his vast knowlege of lesser-known blues greats like ZZ Hill and early rock and rollers like Fats Domino. Tuesdays it's The Humble Farmer, which showcases jazz from the Twenties to the Fifties, music you might hear over the opening credits of a Woody Allen movie, like the sounds of Bob Wilber or Django Reinhardt. The witty volunteer host, Robert Skoglund, is full of observations and stories, some of which are about the music, many of which are about his trying to lose weight or something he saw on Good Morning America. Wednesdays it's JazzSet, a mix of classic and contemporary jazz, hosted by Grammy- and Tony-winning jazz vocalist Deedee Bridgewater. Bridgewater showcases greats like Count Basie and the Wynton Marsalis Septet. Thursdays is the Peabody-winning program Jazz from Lincoln Center in New York, which features exclusive live concerts from America's premier jazz performance series, as well as special guests. The Lincoln Center concerts are organized by Wynton Marsalis and are hosted for broadcast by 60 Minutes correspondent Ed Bradley. Every Friday "Listen Here!" comes live from Chicago, with all the latest jazz releases. The hosts are Mark Ruffin, an Emmy-winning jazz correspondent for Artbeat Chicago on WTTW-TV, jazz editor for Chicago Magazine, music editor for the alternative weekly N'Digo, and a producer of jazz recordings and events; and Neil Tesser, a former adjunct professor in jazz history at Northwestern University.