Lou Rawls has a resonant voice that sounds musical when he's just talking; that's why it's so recognizable. He also has the deepest respect for the classic songs; for example, "Summertime" becomes even more "Summery" when he sings it, each song he sings becomes more of what it was when he sings it.
"Don't Explain", the tune made famous by "Billy Holiday", becomes even more heart wrenching. when Lou sings it, we can see him pacing the floor all night long waiting for his lady to come home. It's 6:AM, and the Sun is shining bright when she finally walks through the door with all kinds of explanations as to where she's been all night. That's when he calmly says to her "Don't Explain".
As he gazes upon her radiant beauty, where she's been or who she was with is so unimportant; once again he's in the presence of her magic charms that fill him with a joy he's never known before.
http://www.youtube.com/watch?v=C1SoDpej7-MEnjoy the music.