A video of the highly enjoyable ED to Soredemo Machi ga Mawatteiru has turned up on YouTube, intercutting cosplay by the seiyuus with the original animation:
In order of appearance, the seiyuus are Yazawa Rieka (guitar, Kon-senpai); Omigawa Chiaki (accordion, Arashiyama); Yuuki Aoi (fiddle, Tatsuno); Shiraishi Ryouko (drums, Haribara).
Ao-chan's fans are going nuts over this on her 2channel thread. Their only complaint is that they wish she was wearing glasses, like her character. Omigawa-san's thread continues to be dominated by people who hate her voice. Sigh. I think she is hilarious in both the show and the PV.