Exit . . . State Left, by Rush (1981): In the years when live recordings meant calling in an extra truckload (or two) of equipment, Rush released live albums like clockwork, one for every four studio albums. This one, their second, captures the band at their commercial and (arguably) artistic peak. The epic proggier years were still fresh in the rear view (as represented by "Xanadu" and "La Villa Strangiato"), but the band's ability to pare down their trademarks to shorter radio friendly material (i.e., "Tom Sawyer," "Spirit of Radio") is on display as well. If you own only one Rush album, really, this ought to be it.