PLAGIARISM CORNER: Every heard of Da' T.R.U.T.H.'s "Joyful Noise"? Katy Perry sure did! Or it might've been her featured artist, Juicy J, who got his only #1 with WHAT 2014 SMASH? They might've been mad because Joyful Noise is rather religious while it's copier has darker themes but don't worry: they got $2.78 million and songwriting credits.