Possible Clues:

• Bars in bars
• King advanced to face revolutionary Korea wannabes on show
• Singing to recorded accompaniment
• Small car with sloping angle gains nothing performing over track
• Japanese entertainment, amateurs sing to recorded backing music
• What you get in some bars -- strong Asian drink served up, all right?
• Sing-along at a bar
• Bar staple
• Source of bars inside bars
• Bar activity, perhaps