“I sang in My Best Friend’s Wedding. That was more true to my voice. But that’s my karaoke voice, you see,” she explained while on The Ellen DeGeneres Show on Monday. “I had to actually have a voice for this song, for this film. I did a lot of training — as much as I could!”
Foxx also joked, “I was naked when the camera was off, because I didn’t want everyone to go crazy!”
Annie hits theaters Dec. 19. Watch the video clips below.