Jamey Johnson and Matthew McConaugheyJamey Johnson helped actor Matthew McConaughey ring in his 40th birthday at a surprise party Tuesday night. "My family, closest friends and I celebrated last night with a surprise performance by one of my favorite artists, Jamey Johnson," the actor blogged on his MySpace page. "There were some epic stories told, lot of laughs and definitely some roasting. Somehow, no blood or glass broken."

Jamey must've put on a great show, as the party apparently lasted until 4:30 AM!

Jamey and Matthew met at this year's ACM Awards in Las Vegas. The actor and his girlfriend, Camila Alves, dropped by the tunesmith's dressing room to congratulate him on winning Song of the Year for 'In Color' and to tell him how much they love his album, 'That Lonesome Song.'

At next week's CMA Awards, Jamey has multiple nominations, including New Artist of the Year, Single and Song of the Year for 'In Color' and Album of the Year for 'That Lonesome Song.'