Kingdom Coming (Henry Clay Work)

Say, darkies, hab you seen de massa, wid de muffstash on his face,
    Go long de road some time dis mornin', like he gwine to leab de place?
    He seen a smoke way up de ribber, whar de Linkum gunboats lay;
    He took his hat, and lef' berry sudden, and I spec' he's run away!

    CHORUS:
    De massa run, ha, ha! De darkey stay, ho, ho!
    It mus' be now de kingdom coming, an' de year ob Jubilo!

    He six foot one way, two foot tudder, and he weigh tree hundred pound,
    His coat so big, he couldn't pay the tailor, an' it won't go halfway round.
    He drill so much dey call him Cap'n, an' he got so drefful tanned,
    I spec' he try an' fool dem Yankees for to tink he's contraband.

    CHORUS

    De darkeys feel so lonesome libbing in de loghouse on de lawn,
    Dey move dar tings into massa's parlor for to keep it while he's gone.
    Dar's wine an' cider in de kitchen, an' de darkeys dey'll have some;
    I s'pose dey'll all be cornfiscated when de Linkum sojers come.

    CHORUS

    De obserseer he make us trouble, an' he dribe us round a spell;
    We lock him up in de smokehouse cellar, wid de key trown in de well.
    De whip is lost, de han'cuff broken, but de massa'll hab his pay;
    He's ole enough, big enough, ought to known better dan to went an' run away.


can you ex-lain why it is needed in your repertoire