I learned this song when I was 13 frm some younger girls in Muskigon Hts. Michigan. It has the refrain, :The people keep acomin' and the train done gone. I was wondering if anyone knew the origin and or importance of this refrain if any other than the obvious literal ones.

Mary had a baby oh lord Mary had a baby oh my lord Mary had a baby oh lord The people keep a comin and the train done gone

It's a great christmas sing along

Luke