When the Quad City Symphony Orchestra (QCSO) and Donald Schleicher took to the bandshell in LeClaire Park on September 8, ominous rain clouds hovered overhead with the promise of rain. That didn’t keep an estimated crowd of nearly 8,000 from trickling in, spreading their picnic munchies, and readying themselves for a Quad Cities late-summer staple: the annual Riverfront Pops concert.