"That Song in My Head" is a song written by Tony Martin, Wendell Mobley and Jim Collins, and recorded by American country music singer and professional dancer Julianne Hough. The song was released March 3, 2008 on as the first single from her self-titled debut album. It was a Top 20 hit on the Billboard Hot Country Songs charts.

The song is part of the track list for Now That's What I Call Country.

"That Song in My Head" was co-written by Jim Collins, Wendell Mobley, and Tony Martin. The song itself is an up-tempo, telling about the narrator's search for the song that she heard while dancing with a male lover.

The single was overall met with positive reviews from websites. Billboard said that the song was "marked by a sweet tone and warm texture.Slant magazine said the single had "enthusiasm and charm".

The music video takes place in two scenes, a beach party at night and a pier during daytime, the Ventura Pier in Ventura, California. The music video starts off with Hough on a boat with radio, remembering past memories. The video then goes back to a couple of days before when Hough was at the nighttime beach party, standing beside the truck from where her lover was dancing from, and dancing to the song on the radio. The video then goes to pier, showing Hough walking down the pier with a portable radio, watching the events that go on in the pier, including palm reading and a man breakdancing. The video regularly goes through both scenes throughout the course of the video. It then ends with Hough finding her lover at the end of the day beside the beach with the same truck. The two then kiss and soon after, the music video ends. It was directed by Trey Fanjoy.

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