Related Clues:

• Single, thus depressed, wifeless
• Not quite as depressed, how one can perform
• Concert rendition
• Single sung very deep
• Prima donna's delight
• Card game; alone
• Only one person can do it
• Piloting milestone
• Milestone for a pilot
• Choral showcase
• Take a chorus or two
• Fly aircraft very near the ground, it's said?
• One voice singing
• Flying feat
• Like some home runs