Soul music works on the main south stage. We know this. Raphael Saadiq demonstrated as much a year ago and this year Fitz & The Tantrums were there to drive the point home. Singer Michael Fitzpatrick strode out like he owned Grant Park, sporting a rose suit, a stripe of gray coursing through his brown mane like Pepe Le Pew. Of course, Fitzpatrick plays it a lot cooler than the suave cartoon skunk, and maybe even Saadiq for that matter. It doesn't hurt that he's got bombshell backup singer Noelle Scaggs by his side. Shaking a blue tambourine with plenty of sass, Scaggs spared no gesture, harmonizing or hyping the crowd at every turn. And it worked. Not only did Fitz & The Tantrums bring out the fans, they brought out the sun as well. A cover of the Eurythmics "Sweet Dreams" followed, but really I was just glad they didn't have to bust out "Here Comes the Rain Again."