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Watch Rep. John Lewis Get 'Happy'

The civil rights legend danced to Pharrell Williams' 'Happy' in a video posted to YouTube on Wednesday.
United States Representative John Lewis (Democrat of Georgia) departs the House chamber with a copy of U.S. President Barack Obama's State of the Union Address that was delivered to a Joint Session of Congress in the U.S. Capitol Washington D.C., Jan. 28, 2014.
United States Representative John Lewis (Democrat of Georgia) departs the House chamber with a copy of U.S. President Barack Obama's State of the Union Address that was delivered to a Joint Session of Congress in the U.S. Capitol Washington D.C., Jan. 28, 2014.Ron Sachs / picture-alliance / dpa / AP file

Clapping and swinging his hips, civil rights legend Rep. John Lewis danced to Pharrell Williams' hit song "Happy" in a recent YouTube post.

“This is my song!” the 74-year-old Georgia Democrat exclaimed. Read more at MSNBC.com.

Check out the video, below.