Parents with grade school or middle school kids may wanna check out the Big, Bang, Boom concert happening at Greenfield’s Warren Cultural Center tomorrow night. It’s a rock & roll group aimed at little kids, and while that may sound questionable, Center Executive Director Ken Sidey says the show’s designed to get parents shaking their hips, not rolling their eyes, “they play pop-rock style music, and they say it’s kids rock that parents will enjoy too. So it’s not the Barney or Wiggles sort of singalongs, it’s fun songs for kids, the show is real interactive, they get everybody up and moving.”