There are more than a few fussy-baby-in-a-carseat-gets-happy-when-favorite-song-comes-on-the-radio videos in the YouTubes... ( for example). But beat for beat, and bounce for bounce this little girl who has claimed Katy Perry's 'Dark Horse' as her jam, is one of the best.
After seeing it Katy even tweeted that this might be inspiration for a new side gig:
We first learned about this clip from BuzzFeed.
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