 " Everything Comes Down to Poo " was composed by Fordham , Marx , and Lopez . The inspiration for the song came when one of the show 's medical advisors , Jonathan Doris , shared his observation with Fordham that stool samples seemed to be asked for at hospitals no matter what was being diagnosed . The number was the latter of two music videos released by NBC on YouTube in advance of the episode 's airdate — the other video being “ Guy Love . ” The videos were deleted on YouTube , but have now reappeared on the website . 
