Watch John Legend Sing 'All of Me' Parody at University of Pennsylvania CommencementWhen he returned to his alma mater yesterday, John Legend was arguably on top of the world.
'Happy' No More: John Legend Scores First U.S. No. 1 with 'All of Me' as Ariana Grande LoomsFor the first time since February, "Happy" hasn't danced and clapped its way to the No. 1 spot in the country. Instead, it's all solemn pianos at the top of the charts.