Anybody that recognizes that Shake Some Action! took their name from the Flamin’ Groovies power pop classic will probably not be disappointed by this Seattle-based quartet. Armed with two Rickenbacker guitars and endless harmonies, the group is bunch of unabashed pop classicists, bringing mind not just ’70s power-pop but the heyday of jangle-pop in the ’80s, from the REM ringing of the guitars to the Robyn Hitchcock edge to delivery of singer/songwriter James Hall. If the crowd at the EMP stage this afternoon was a little sparse, that’s no indication of the quality of the music — more that guitar-pop like this is more of a niche than folk music these days and it’s yet to find a place in a festival like Bumbershoot. And that’s a shame, because Shake Some Action! is a welcome reminder of why there were so many bands that sounded like this in the ’80s - after all, guitars and harmonies like this always sound so good.