The bands did not do anything when we watched fireworks from monorail resort area. Come to think of it, I don't think they did much when we were simply on the other side of the park during fireworks. We meant to actually go to the fireworks one night, to see this feature, but it just didn't happen. Twice we had G+ passes, weather was a factor two nights...
Also, the current shows just aren't as compelling as prior fireworks/shows were. Hopefully, WDW will bring back better shows.