Blake Shelton has his fourth career No. 1 song with 'Home.' The country star's remake of the Michael Buble hit tops the country singles charts this week. Shelton says he knew 'Home' wasn't originally intended to be a country song, but he was willing to take the risk recording it.

"You never know how people are going to react to the cover of a song," Shelton tells Dial-Global. "For one thing, to cover an old country song is scary enough, but to cover a pop song, it's a stretch for me. But when I listen to 'Home,' it just doesn't sound like anything other a country song to me. And so, I had the same worries about it as I do with any single that I release . . . I have my fingers crossed and I sweat it out."

Shelton has girlfriend Miranda Lambert to thank for introducing him to the song. She loaded the original version on his iPod, knowing he'd love it.

Buy 'Home' on iTunes