Archangel,I didn’t think anyone would notice.In the George Gershwin song " Lets call the whole thing off " ,written for the movie " Swing time " & sung by Fred Astaire & Ginger Rogers comes that classic line.If you look up the sheet music for it,the second potato in verse is spelled, “potahto” . So as far as that song,they are not spelled the same. Semper fi , keith