With so many bands and so little time, making decisions on which sets to check out at Lollapalooza, Chicago’s biggest music festival of the year, and which to miss out on can be a bit stressful. Of course, headliners like Radiohead, Rage Against the Machine, Wilco, Nine Inch Nails and Kanye West are givens, but with so many promising smaller acts performing in different areas at the same times—in forecasted temperatures...