Examples:

• The difference being I can carry a tune.
• All right, so you can't carry a tune, but can you cook?
• Uh, they could carry a tune, not you.
• Mulder, I can't carry a tune.
• Though...sometimes... I think it would be nice to be able to carry a tune.
• Well, the man can carry a tune, you know?
• She's a little pitchy, but she can carry a tune.
• Like I always say, it's better to carry a tune than a grudge.
• Like I always say, it's better to carry a tune than a grudge.
• Unfortunately, I can never carry a tune.