Why can't I get this song out of my head?

[CatWoman]

Down on the levee in old Alabammy
Daddy and Mammy, Ephram and Sammy
On a moon-lit night you can find 'em all
While they are waitin, the banjo's are syncopatin
What's that they're saying, What's that they're saying
While they are playing, I'm humming and swaying
It's the good ship Robert E Lee
Come to sail the cotton away

Now won't you see them shuffling along
Now see them shuffling along
Take your best gal, your real pal
Go down on the levee, I said the levee
Hear that music and song
Now doin the shuffling song(?)
It's simply great, mate, waiting on the levee
Waiting for the Robert E Lee

Wistles are blowing, the smokestacks are showing
The ropes they are throwing, excuse me I'm going
To the place where all is harmonius
Even the preacher, he is the dancing teacher
Have you been down there, were you around there
If you ever go there, you'll always be found there
Now a-dog gone, here comes my baby
On the good ship Robert E Lee

[Saphire]

1. same reason this one is in my head

If it keeps on rainin', levee's goin' to break,
When The Levee Breaks I'll have no place to stay.

Mean old levee taught me to weep and moan,
Got what it takes to make a mountain man leave his home,
Oh, well, oh, well, oh, well.

Don't it make you feel bad
When you're tryin' to find your way home,
You don't know which way to go?
If you're goin' down South
They got no work to do,
If you don't know about Chicago.

Cryin' won't help you, prayin' won't do you no good,
Now, cryin' won't help you, prayin' won't do you no good,
When the levee breaks, mama, you got to move.

All last night sat on the levee and moaned,
Thinkin' about me baby and my happy home.
Going, going to Chicago... Going to Chicago... Sorry but I can't take you...
Going down... going down now... going down....