The Jazz Institute of Chicago‘s annual club tour is an urban presentation innovation and a treat, revealing an unheralded depth of local audiences, entrepreneurs and artists. On Wednesday night, Dudley Owens blew tenor sax with the largest sound I’ve heard maybe ever, in combo with an older pianist (sorry I didn’t get his name) who played as no one ever told him he couldn’t, turning the keyboard inside-out. They completely refreshed the Billie Holiday standard “All of Me” at a friendly, funky hangout called City Life Cocktail Lounge on East 83rd Street, while a shakedancer flirted outrageously with regulars at the horseshoe-shaped bar and jazz fest fans who’d paid a flat fee to be bused around to 13 venues, sampling the city’s diversity. Chi-town’s jazz scene may be short on fame and fortune but is rich with grit and gusto and a loyal, born ‘n’ bred following.