David Hull (White Josh) celebrated his birthday on-set the day that they shot "Greg's Drinking Song."
It took the crew several days to transform the Whitefeather office into a forest for the fairytale sequence. There was no plastic greenery, all of the plants were living.
Despite taking lessons in preparation for the "Ping-Pong Girl" song, Rachel Bloom has admitted that she's not very good at the game, so a ball was CGI'd into most shots.