KT Tunstall

KT Tunstall was something of a late bloomer: the husky-voiced Scottish songstress didn't get her break until she was 29, following an electric performance on British music show Later with Jools Holland. Now five albums in, her gutsy roots-rock has taken on elements of electronica and a dollop of country. She's a singer-songwriter and guitarist who somehow has both underground cred and millions of sales.