Possible Clues:

• "Chestnuts roasting ..." co-writer
• "It Wasn't All Velvet" memoirist
• Mel, "The Velvet Fog"
• Late singer Mel
• Singer nicknamed 'The Velvet Fog'
• "Velvet Fog" Mel
• Mellow Mel
• ''It Wasn't All Velvet'' autobiographer
• "The Christmas Song" composer Mel
• "Born to be Blue" penner