Lord Invader (Rupert Grant)'s original "Rum And Coca-Cola" (Lord Invader - Lionel Belasco) is a calypso protest song. Lionel Belasco wrote the music based on a Martinique folk song. The Yankees referred to the American soldiers stationed in Trinidad.

The Andrews Sisters (Patty, Maxine and LaVerne Andrews) 1945 single "Rum And Coca-Cola" topped the Billboard chart. Some Decca labels list composers as Amsterdam-Sullavan-Baron and others lists comedian Morey Amsterdam as the lone writer. Wikipedia: "The Andrews Sisters also seem to have given little thought to the meaning of the lyrics. According to Patty Andrews, "We had a recording date, and the song was brought to us the night before the recording date. We hardly really knew it, and when we went in we had some extra time and we just threw it in, and that was the miracle of it. It was actually a faked arrangement. There was no written background, so we just kind of faked it," and only recorded it then because there were about 10 minutes to go in their recording session. Years later, Maxine Andrews recalled, "The rhythm was what attracted the Andrews Sisters to 'Rum and Coca-Cola'. We never thought of the lyric. The lyric was there, it was cute, but we didn't think of what it meant; but at that time, nobody else would think of it either, because we weren't as morally open as we are today and so, a lot of stuff—really, no excuses—just went over our heads."