Possible Clues:

• Lifetime Achievement Grammy winner Horne
• Hideous "Li'l Abner" character
• River of Siberia
• Singer Horne, or place in Manitoba
• Left one woman for another
• Glinda, in ''The Wiz''
• 2,700-mile river
• Horne in jazz
• Talentwise, a Horne of plenty
• River whose headwaters are near Lake Baikal