Despite all the talk of a classical recording glut, enthusiasts know that many of the greatest recordings from decades past are all but lost, unavailable to the public at any price. “ArkivMusic, an online retailer that launched in 2002, is out to reverse that trend and restore as much of the deep catalog as possible. In addition to stocking every classical CD in print, it now offers what it calls ArkivCDs: reissues of out-of-print CDs produced on demand for the consumer.”