Sister duo the Sweethearts of the Rodeo scored a series of Top Ten country hits during the late '80s with a blend of contemporary country-rock and traditional bluegrass. Janis (born November 28, 1959) and Kristine Oliver (born March 1, 1957) grew up in the Los Angeles suburb of Manhattan Beach and started singing harmony together while still in elementary school. As teenagers, they performed together in garage bands and, later, acoustic bluegrass groups and also played by themselves in coffeehouses as the Oliver Sisters. In addition to bluegrass, they also took a strong liking...