by Richie UnterbergerAlong with the Shirelles and the Ronettes, the Shangri-Las were among the greatest girl groups; if judged solely on the basis of attitude, they were the greatest of them all. They combined an innocent adolescent charm with more than a hint of darkness, singing about dead bikers, teenage runaways, and doomed love affairs as well as ebullient high-school crushes. These could be delivered with either infectious, handclapping harmonies or melodramatic, almost operatic recitatives that were contrived but utterly effective. Tying it all together in the studio was Shadow Morton, a mad genius of a producer who may have been second in eccentric imagination only to Phil Spector in the mid-60s.Originally the Shangri-Las were comprised of two pairs of sisters from Queens, NY (identical twins Marge and Mary Anne Ganser and siblings Mary and Betty Weiss). They had already recorded a couple of obscure singles when they were hired by Geo...