Related Clues:

• Not everyone can carry one
• Whistler's whistle, maybe
• Prepare, as a piano
• Adjust for pitch
• Adjust, as a guitar
• Style of poetry
• It may be whistled
• Do some piano maintenance
• Part of a number
• Thing to hum or whistle
• Often-carried thing
• Adjust, as a piano
• Tony-toting Tommy
• It's whistleable
• Catchy thing?