There's no one way to define a great voice: Genius might lie in the phrasing, the range, the power, the control, the words themselves, or some sort of indescribable something else. But one way to diagnose genius for sure is to have a singer walk into a crowded room with little to no accompaniment, open his or her mouth, and command breathless attention in a matter of seconds.
British singer Adele arrived on the world stage three years ago with her debut album, 19. Now, two Grammy Awards and millions of records sold later, she's out with her second release, 21. Adele herself is now 22, but her powerhouse voice and '60s glam look — hair sleek and teased up high, fake eyelashes out to there — belie her young age.