One of the best kept secrets for family fun in Ann Arbor is at the Firefly Club, 637 S. Main, starting around 5:30, running until 8:00 every Friday and Sunday evening. Susan Chastain, owner, singer and organizer of great jazz music 7 nights a week, doesn't advertise Easy Street Dixieland Jazz on Fridays, or Phil Ogilvie's Rhythm Kings on Sundays as being great fare for kids. But, this kind of brassy jazz from the 20s & 30s appeals to all ages and is a lot of fun to dance to. Children can see a variety of instruments played by some of the best jazz musicians in town. It's a great way to introduce kids to one of America's unique musical forms. AADL has a fine collection of jazz cds, dvds and books for readers and listeners of all ages.