VIDEO : Meghan Trainor Defends Jennifer Lopez's 'Decision' to Work With Dr. Luke

Selena Gomez at The iHeartRadio Music Awards in LA Let?s get to the bottom of this. Meghan Trainor is speaking out in defense of Jennifer Lopez, who has received criticism for producing her latest single, ?Ain?t Your Mama? with Dr. Luke, Kesha?s former and controversial producer. ?I texted her the song and she had no idea,? says Trainor. ?I sent it to her and said, ?Do you like the song??