“No one gave a f*** about a girl with a guitar back then,” says KT Tunstall, reflecting on her early days as a struggling singer-songwriter cutting her teeth. Sure; fame and money has come her way since then, but so, too, has real life in recent years. Nevertheless, at 43, Tunstall appears on the Liquid Room stage as a woman content, comfortable in her own skin and making the best music of her career.