After Jennifer Lopez delivered her new single 'Ain't Your Mama,' controversy broke out when production credits revealed that Dr. Luke had his hand in the feminist-flavored offering. Meghan Trainor, who wrote the song, explained that JLo had no idea Dr. Luke was credited on the song. "I texted her the song and she had no idea [that Dr. Luke produced it] – she thought I did it alone by myself at my house, which a lot of people think because I do do that," Trainor told Digital Spy. "I sent it to her and said, 'Do you like the song?' and she said, 'I love the song, my kid loves the song – he's made me play it five times already so I know it’s a hit – when can I cut it?' so I said immediately, 'Whenever you want!'"

Apparently, Lopez and Trainor worked on three tracks together, while 'Ain’t Your Mama' was pushed to be debuted on the American Idol finale. "[It's] not fair on her, not at all… [Epic Records head] L.A. Reid wants me to work with her on this new record because we've had so much success…But I felt terrible when Jennifer got all the hate for [working with Dr. Luke], and it's just all ridiculous. It's such a big song for her."