Possible Clues:

• Initial letter puzzle
• A sign for what's wrong then for what's right, they say? It's a puzzle!
• Puzzle that involves a quoted passage
• A clever rhyme or subtle teaser I constitute
• Verse that is initially puzzling
• A bad-tempered moment, we hear, caused by a puzzle
• Diversion involving a quotation
• Puzzle over second sound
• Puzzle, when confronted, initially confuses -- it's a killer
• In which first letters spell out something