Seventeen-year-old ’round-the-way-girl Teairra Mari’s airy but rock-solid soprano and wanton girl-next-door charm have earned her the title “Princess of the Roc” and landed her a spot in Jay-Z’s Midas whip. And for that she can thank her lyricist dudes: They’ve got teen-anxiety zeitgeist down. Teairra tears through juicy jilted-girl anthems…
