The McCormick Brothers are not as well-known as other country and bluegrass harmonizers who were popular in the 1950s, such as the Stanley Brothers and the Louvin Brothers. But they were a good bluegrass band, though they weren't as long-lived as the most renowned ones working the same turf, and certainly didn't record as often or sell as many records. The seeds for the act were planted when Lloyd McCormick and Kelly McCormick formed a guitar-mandolin duo as youngsters, performing duets on Kentucky and Tennessee radio stations. Their personnel and instrumentation expanded, and...