Perhaps some of you are old enough to remember one of the most popular musical groups of the mid 1960s, The Righteous Brothers. Remember "Unchained Melody"? I remember once hearing an interview with one of the Righteous Brothers, Bill Medley, when he described the significance of their name. Normally when we think of the word "righteous," we think of impeccable behavior and sterling moral character. But their name was not so much about their morality as it was about the quality of their music. In the '60s (and I suspect that in some ways it is not much different today), "righteous" was also a kind of exclamation that people used to express their approval and admiration of someone else. You were, "righteous, brother!" if you were cool. Someone once heard the music of this group and exclaime…