Mraz became a fan of Caillat after hearing her music on MySpace. He then cold-called her to see if she'd want to write and sing together. In an interview with VH1, Mraz stated that he "played a songwriting game" with friends to see how the lyrics would go.

The video was shot in Prague, Czech Republic and was released January 16, 2009. Mraz and Caillat's parts in the video were filmed separately. The video follows the context of the song, featuring Mraz and Caillat singing their verses. The video starts with a shot of a city square. Mraz is shown getting ready to meet somebody. Caillat is in a hilly seaside area and sits on the beach as the song starts. Mraz gets ready and goes out to the square. Caillat continues to sing the song walking beside the sea and playing with her scarf. Mraz and Caillat sing the song with both in separate places. Scenes are interspersed with the scene of a car zooming inside and Mraz ultimately reaches Old Town Square in Prague and stands in front of the Jan Hus Memorial Statue. Both Mraz and Caillat look back and the video ends with the implication as if both of them see one another.

http://en.wikipedia.org/wiki/Lucky_%28Jason_Mraz_song%29

Lucky by Jason Mraz and Colbie Caillat
http://frederickfung.xanga.com/audio/e86d63775924/

"Love Story" is the title of a song written and recorded by American country artist Taylor Swift. It is the first single from her second studio album, 2008's Fearless. The song was released in September 2008, and by November it reached the top of the Billboard country chart for two weeks, becoming her third Billboard Number One. It also became her first top five hit on the Billboard Hot 100.

"Love Story" is Swift's first international single, venturing into other markets outside North America and Australia. The single is also Swift's first to receive remixes for the clubs. As of the week ending February 8, 2009, "Love Story" had been downloaded more than 4 million times, making it the most downloaded country song in history and is the best-selling country song in the United States surpassing LeAnn Rimes' "How Do I Live" by 1 million copies. In addition, "Love Story" became the first country crossover recording to hit number one on the Nielsen BDS CHR/Top 40 chart.

http://en.wikipedia.org/wiki/Love_Story_%28Taylor_Swift_song%29