Blake Shelton's 'All About Tonight' has climbed to the top of both the Mediabase/Country Aircheck and Billboard country charts, marking his second No. 1 song of the year. 'Hillbilly Bone' -- Blake's collaboration with Trace Adkins -- peaked atop the charts in March.

"I just want to thank my fans, friends and country radio for making this single a No. 1 for me," Blake said upon hearing the news. Thanking the promotional staff of his record label Warner Music Nashville, the Oklahoma native gushed about their commitment and passion for his music. "I have never had two No. 1's within five months of each other ... I said this back in March, and I'll say it again, this is the best year of my career."

'All About Tonight' is the first single and title track from Blake's new 6-Pak album, and the lanky singer-songwriter says the tune fits him just right. "The song couldn't have been tailored any more for me and my personality and what people have probably come to expect from me," says Blake. "I don't know how many times here in Nashville that I've rolled into town from Oklahoma knowing that I have to be awake at 7:00 AM to be on television or be in the studio or something really important, and at about 1:30 in the morning I'll be at some karaoke bar here in town with a circle of people around me raising hell and singing Tracy Byrd songs and doing shots knowing I've got to be up four hours from then. But it's never stopped me. I love a good time."

Keith Urban's 'I'm In' remains at No. 2 on both charts, followed by last week's chart-topper, the Zac Brown Band's 'Free.'