original_query: What is the significance of the song "Sukiyaki" being featured in the episode "Flight 1"?
query: What is the significance of the song "Sukiyaki" being featured in the Mad Men episode "Flight 1"?
answer: The significance of "Sukiyaki"'s appearance in the Mad Men episode "Flight 1" is that it's anachronistic.  The episode is set in March 1962, before the song's US release, yet it's played in a Japanese restaurant scene.