New Delhi, June 9 -- Nearly 50 years after Elvis Presley 's death, a gaggle of exuberant young boys and teens shook up his hometown, intent on keeping the king's legacy alive for a new generation.

Ranging in age from seven to 17, some in jeweled jumpsuits, they took the stage at the Tupelo Elvis Festival's youth tribute artist competition last week.

In contrast to their peers, who may never have heard of Elvis, the competitors have dedicated an enormous amount of time and energy to embodying the king's singing voice, mannerisms and style.

They are careful to specify they are Elvis tribute artists. Unlike impersonators, who pretend to be Elvis and sometimes present a characterized version of the king, tribute artists strive for authenti...