Related Clues:

• Source of an artist's inspiration
• Terpsichore, e.g.
• Mull over
• Artistic inspiration
• Creative inspiration
• Source of inspiration
• Mull
• Erato is one
• Calliope, for one
• Artist's "visitor"
• 23-Down is one
• Muse
• Clio, Erato or Urania
• Clio, Erato or Urania, e.g.
• Ruminate