This baby is totally unimpressed with her mom's singing

Susan Doll says her 7-week-old is normally a sweet, giggling baby. But it turns out there's one thing that transforms the normally happy camper into a sourpuss -- her mom's singing.

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Doll turned the camera on little Penelope to document what happens any time she bursts into song. When Doll begins to sing "You Are My Sunshine," Penelope is clearly not amused. Her face crumples into a grimace as if she can't wait for her mom to stop.

What songs did you sing to your children when they were little? Let us know in the comments below.