You sing along without even thinking about the lyrics. We're going to explore the history of one of those songs this morning. (SOUNDBITE OF SONG, "AMAZING GRACE") PAUL ROBESON: (Singing ...

You sing along without even thinking about the lyrics. Well ... (SOUNDBITE OF SONG, "AMAZING GRACE") PAUL ROBESON: (Singing) Amazing grace. SIMON: "Amazing Grace." The song was first performed ...

You know those songs that you just kind of know? You sing along without even thinking about the lyrics. We're going to explore the history of one of those songs this morning. (SOUNDBITE OF SONG, ...