Milwaukee has always had a good rock and roll scene. Sure, there have been ups and downs, but the three-chords-and-the-truth spirit has been fueling Brew City garage bands from the days of The Bonnevilles and The Nomads in the 1950s through today. If you don't believe me, check out local musician Peter Roller's new book, "Milwaukee Garage Bands: Generations of Grassroots Rock."