"Carolyna" is a song by British singer-songwriter, Melanie C. It was released as the second single to be taken from her album, This Time in United Kingdom and European territories. Although Melanie worked hard on promotion for the single, it didn't have the impact that was hoped and sales stalled, also failing to help the sales of This Time. "Carolyna" reached number forty-nine in the UK Singles Chart where it sold over 6,391 copies in the first week, and fared little better in other European countries, selling over 100,000 copies worldwide.

In February 2008, the song and its video was put on the playlist of MuchMoreMusic and added to MTV's website in Canada. The song charted at #1 on its first week in MuchMoreMusic singles Top 10. According to EMI Music Canada, "Carolyna" was the first single for the Canadian release of the album This Time in April 2008.

"Carolyna" is a song about a girl who has had a rough start in life and needs to escape to find freedom and happiness. Melanie revealed during her interview at Loose Women, that she wrote this song after watching a documentary in America about young kids living in the streets; and that the danger of homelessness was something that always scared her in her childhood.

The music video was directed by Tim Royes and was shot on 3 May 2007, and it was the final video he directed before his death. The video sees Melanie as the guardian angel of a girl, played by actress Christina Chong, who is facing problems in her own life such as alcoholism, fighting with the boyfriend and non-stop partying. Whenever the girl looks herself at the mirror, she will see Melanie looking at her. Throughout the video, Melanie is also seen in the places where the girl was seen having problems such as the living room of the girl's house, the room where the girl was seen partying and the bedroom of the girl where at the end of the music video, Melanie then appears and spreads open her arms as a gesture of aid. The camera shows the tattoos on Melanie's wrists, which read "Love" and "Happiness" in Thai.

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