Adam Lambert teased the world last week when he released a 37-second snippet of his own rendition of Rihanna's 'Stay,' and now a full performance of the track hit the web. Captured from a concert in South Korea, it was well worth the wait.

Glambert is a fan of showing off his impressive (and possibly currently incomparable) vocal range, but his delivery is understated for the ballad, and it works. Lambert still belts like a champ, but he conveys just as much emotion -- possibly more -- when he tones it down. The former 'American Idol' runner-up displays not only his typical vocal power and passion, but also a vulnerability that he doesn't showcase often, and it works beautifully.