Related Clues:

• Pope's work
• Feature of many a sympathy card
• Limerick, for one
• Somber song
• Hallmark card text, often
• 59-Across, for one
• Pope piece
• Greeting card feature, often
• It has been compared to a tree
• Sad poem
• Song of sorrow
• Gray work
• Stressful work?
• Verse composition
• Gray lines?