(From left) Allyson Reggi, 51, and her daughter Amelia, 15, brave the dreary weather to enjoy the music at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Frank Rosaly, of the Jason Stein Quartet, performs at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Ken Vandermark performs on the Jazz and Heritage Stage at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Mike Allemana, of the Caroline Davis Quartet, performs at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Jason Stein, of the Jason Stein Quartet, performs at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Crowds brave the rainy weather to enjoy the music at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Despite the rainy weather, festival atendees explore the merchandise stands at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Russ Johnson, performing with the Jason Stein Quartet, plays the trumpet at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Berenise Vega, 16, applauds as a friend of her's, a member of the Curie High School Jazz Band, performs at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Crowds brave the rainy weather to enjoy the music at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

A man, name not given, whistles to show his approval of the music at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

The Curie High School Jazz Band performs on the Chicago Community Trust Young Jazz Lions Stage at this year's Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Paul Nilssen performs on the Jazz and Heritage Stage at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times

Caroline Davis performs on the Jazz and Heritage Stage at the Chicago Jazz Festival in Grant Park on Saturday, September 1, 2012, in Chicago. | Chandler West~Sun-Times