Green River: The comeback that meant the most to the staff at Sub Pop was the climax of the festival’s second day. Mark Arm screamed his lungs out; drummer Alex Shumway crowd-surfed. But it wasn’t all agro. After the plaintive (though loud) break-up lament “Baby, Help Me Forget,” Arm paused. “That song breaks my heart every time,” he said, and he didn’t even sound sarcastic.

(Kevin P. Casey / For the Times)