Possible Clues:

• Short slogan
• Commercial song that one often hears with bells
• Metallic sound in commercial song
• 'I wish I was an Oscar Mayer wiener ...,' e.g
• Tune on the radio
• Joking line not OK, in verse for ad
• Marketing slogan
• It tends to pull some strings for product placement in The Sound of Music
• Commercial music
• Phone call, informally