By Alan Light Backstage at the 23rd annual Farm Aid concert, the sound of Kenny Chesney's voice filled the air. Chrissie Hynde cursed at her cellphone, pulled off her boots and curled up on a couch, following a sundown set by the latest configuration of her band, the Pretenders.

By JEFF MAISEY By Jeff Maisey Correspondent Retro blues-rock act The Black Keys proved Saturday night at The NorVa that what's old is new again, but, of course, with a contemporary twist.

Is it just us, or have dark times descended on the music industry in more than just the bottom line? We're talking about band names going Black. The Black Keys didn't exactly start the trend.