Next is from a sort of preview to Allen's SLAVE SONGS. It comes in The Pennsylvania freedmen's bulletin, 1865. The song is "I'm Gwine to Alabamy", and it's called a "Mississippi River Boat Song." Further, it is noted that it is, "A very good specimen, so far as notes can give one, of the strange barbaric songs that one hears upon the Western steamboats."

The tunes is given, in G (natural) minor.

I'm Gwine to Alabamy
    Ohh....
For to see my mammy
    Ahh....

etc. Lyrics at the link below.

LINK