Pharrell Williams is breaking new ground with his "Happy" music video, which features a 4-minute, feel-good tune on a 24-hour loop.
Seems like complete insanity, but it's surprisingly pretty catchy and a lot of fun to watch! The video features various celeb cameos including Jimmy Kimmel, Magic Johnson, Tyler the Creator, Steve Carell, Miranda Cosgrove and Jamie Foxx.
If you have an extra day on your hands, check it out: http://24hoursofhappy.com.
If you don't want the song stuck in your head indefinitely, just watch the shortened version here: