music critics are comparing her to jazz royalty sarah vaughan and ella fitzgerald. joy to the world, joy to the world the lord is come ♪ ♪ let earth receive her king ♪ ♪ let every heart, let every heart ♪ >> you may snow samara joy as a jazz headliner, but come december, she's just one of the mclendon family. this year, her foray into christmas music scored two grammy nominations. ♪ joy to the world ♪ >> it's been a whirlwind few years. ♪ ♪ i don't know where my man is, where can he be, what is he doing ♪ ♪ i've been asking questions all over town, where can he be, where can he be ♪ >> she's as surprised as anyone at her head-spinning success. after all, much of the jazz she sings was last popular a half century ago. but with a voice as limber as a gymnast -- ♪ don't let him go ♪ >> she's given the old standards a cool new gloss. ♪ ♪ hold on to him ♪ >> hard to believe that jazz was something she sort of stumbled upon. >> freshman me had no idea that this was in store. okay, that three years after graduation, i would be standing here before you like this. ♪ day by d