22. Lana Del Rey
Biggest accomplishment this year: Returning to the Billboard Hot 100 with "Young and Beautiful," her single from the The Great Gatsby soundtrack
Del Rey started the year strong, beating out Taylor Swift by winning the BRIT award for the Top International Female Solo Artist in February. Since then, she's been at work on her third studio album and released music videos for two cover songs she's done, "Chelsea Hotel #2" and "Summer Wine." Her new song, "Young and Beautiful," was featured in the recently-released film adaptation of The Great Gatsby, and served as the soundtrack's lead single. It reached as high as No. 22 on the Billboard Hot 100 chart, Del Rey's best mark since her debut track "Video Games."