Related Clues:

• Karaoke prop, for short
• Dialogue that breaks the fourth wall
• Boom box abbr.
• House address
• Stage mutter
• Theatrical object
• Parenthetical script comment
• Set item
• Private line?
• Muttered mot
• Whispered word
• Item used onstage
• Bracketed material
• Tangent
• Lapel attachment