From: Tetney, England
First step: Henderson finished sixth on the U.K. X Factor in 2012. With a smoky, soulful voice, she was often described as a budding Adele.
Reboot: After The X Factor, she signed with Simon Cowell's Syco Music and finished her debut, Chapter One, due Oct. 13. "[Cowell] never rushed me," she says, "and is always reminding me to enjoy this ride because he has seen so many artists forget to."