Possible Clues:

• ___ Clark who sang 'Poor, Poor Pitiful Me'
• Clark or Gibbs of country
• Purple-haired twin on 'The Simpsons'
• Grammy-winning drummer ___ Lyne Carrington
• 'Somebody's Knockin'' singer Gibbs
• Berlin vocalist Nunn
• Purple-haired twin on "The Simpsons"
• 'You're Easy on the Eyes' singer Clark
• Bindi and Robert Irwin's mother
• Sherri's twin on 'The Simpsons'