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Taylor Swift was named country songwriter of the year at the BMI Country Awards, becoming the youngest person to win the honor at age 20.

The country-pop queen earned the award based on her compositions of her songs "Fifteen," "White Horse" and "You Belong with Me," as well as "Best Days of Your Life," which was recorded by Kellie Pickler. The previous youngest winner in the category was Bill Anderson, who won at age 23 in 1960, followed by Johnny Cash, who won in 1956 at 24.

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Swift — who became the youngest person to win album of the year at the Grammys this year — also won country song of the year with co-writer Liz Rose for "You Belong with Me." She is the first person to win the award for three straight years.The awards cap a stellar week for Swift, whose third album, Speak Now

, debuted at No. 1 with the biggest opening of any record since 2005.Others honored at the Tuesday ceremony include Miranda Lambert; Toby Keith; Keith Urban; Zac Brown; Lady Antebellum's Dave Haywood and Charles Kelley; Sugarland's Luke Bryan, Eric Church and Kristian Bush; and Bill Sherill, who won the BMI Icon award.