How do you cheer up a crying baby? Try playing her Katy Perry's "Dark Horse"

This baby girl might very well be the biggest Katy Perry fan there is!

Eva Baker shared a YouTube video of her daughter in the car. She isn't in the best mood...until Katy Perry's "Dark Horse" comes on!

Then, the little girl can't help but jam out!

The video is sure to put a smile on your face!

WATCH: