Blake Shelton's touching tribute to his late brother became a 2012 CMA Award winner when 'Over You,' sung by his wife Miranda Lambert, captured the trophy for Song of the Year, which goes to the songwriters. Lambert broke down in tears as her husband spoke about his brother while accepting the award.

The couple shared an emotional kiss after hearing their names announced. Shelton dedicated the award to two late family members. "I lost my brother in a car wreck when I was 14 years old," Shelton said, adding, "and later in life, when I decided I wanted to be a country singer, my dad always told me, 'Son, you should write a song about your brother.' I lost my dad in January, and it's so amazing to me that tonight, even after he's gone, he's still right."

Turning to a bawling Lambert, Shelton said, "I just needed the right person to write this song with and the right person to sing it. I love you so much." She replied, "Thank you, Blake, for allowing me to sing this beautiful song and write it with you."

This category might have been one of those rare instances when an artist rooted against one of his own songs, because Shelton's hit 'God Gave Me You' was also nominated. Shelton didn't write that song -- Dave Barnes did -- and 'Over You' obviously meant more to him personally. Congrats to Blake and Miranda on the win!

Watch Miranda Lambert and Blake Shelton Accept the Song of the Year Award