Premise: Katy Perry . In film , she released an autobiographical documentary titled Katy Perry : Part of Me in 2012 , and voiced Smurfette in the 2011 film The Smurfs and its sequel in 2013 . `` Part of Me '' is a song by American singer Katy Perry , released as the lead single from Teenage Dream : The Complete Confection .
Hypothesis: Katy Perry sings.
Label: ENTAILMENT