First it became the basis for an Oscar-nominated movie. Now, “Straight Outta Compton” — the groundbreaking album from rap group N.W.A. and a one-time flashpoint in the nation’s culture wars — has been selected for the prestigious National Recording Registry. Plenty of standards are joining the registry too, including Judy Garland’s version of “Over the Rainbow,” the Eagles’ 1976 greatest-hits collection and Don MacLean’s elliptical 1971 folk song “American Pie.”
