 Executive producer Al Jean spoke to "Entertainment Weekly" in September 2014 about the third segment of the episode, and the difference in voices between the older and newer versions of the characters.He said that although Dan Castellaneta’s portrayal of Homer is better remembered for its evolution over time, Nancy Cartwright’s voicing of Bart changed as well, because "it was lower-register, and you can see in the difference in this segment.It was really funny to get the interplay [between the two versions of the Simpsons] and for the actors to see the voice evolution.