Possible Clues:

• "Not quite a year since she went away, Rosanna" band
• *Wizard revealer
• The Wizard's unmasker
• Debunker of the Wizard
• In ___ (altogether)
• Wizard of Oz unmasker
• ''Wizard of Oz'' barker
• Miss Gulch's bugbear
• Sang of "Africa"
• In __ (fully)