Related Clues:

• It may begin with "Here's"
• Opening speech
• Keynote precursor
• Song starter
• Emcee's remarks
• "101" class, briefly
• "Heeeeere's Johnny!" is one
• Opening music
• Emcee's line
• "In this corner ..." begins one, briefly
• Emcee's words
• Talk show lead-ins
• Lead-ins
• Musical opener
• Prefaces