Episode Title: The episode title, "If It's Only In Your Head" is a lyric from the song "Putting It Together" from the 1984 musical Sunday in the Park with George. The full line is 'A vision's just a vision if it's only in your head. If no one gets to see it, it's as good as dead! It has to come to light." The line "A vision's just a vision", taken from the same lyric, was used as the title for another episode earlier this season.