They weren't brothers, but Bill Medley and Bobby Hatfield (both born in 1940) were most definitely righteous, defining (and perhaps even inspiring) the term "blue-eyed soul" in the mid-'60s. The white Southern California duo were an established journeyman doo wop/R&B act before an association with Phil Spector produced one of the most memorable hits of the 1960s, "You've Lost That Lovin' Feelin'." The collaboration soon fell apart, though, and while the singers had some other excellent hit singles in a similar style, they proved unable to sustain their momentum after just a year or two at the top.