Here's What #HappySoundsLike to Cody Simpson

Cody Simpson just wants to make the world happy. That's why the Australian-born pop star is in Austin, Texas, this week, where he will be performing at a United Nations/MixRadio brunch at the SXSW festival. Simpson, 18, is the spokesman for the #HappySoundsLike playlist, promoting the U.N.'s International Day of Happiness on Friday, March 20. The singer and other celebs selected tracks for the playlist.