Taylor Swift became one of country-pop's brightest (and youngest) faces in 2006, when the 16-year-old vocalist released her first album. Although new to the American public, Swift had been performing since early childhood, taking inspiration and encouragement from her opera-singing grandmother. She sang "The Star-Spangled Banner" before a Philadelphia 76ers game at the age of 11; the following year, she began practicing her guitar skills for several hours each day, only stopping when her fingers...