This is a cover of the Woody Guthrie song, which is actually spelled “Do Re Mi”. It’s a song about the Dust Bowl, in which thousands of families fled famine in the South & West for California
https://en.wikipedia.org/wiki/Dust_Bowl
Lots of folks back East, they say, is leavin' home every day
Beatin' the hot old dusty way to the California line
'Cross the desert sands they roll, gettin' out of that old dust bowl
They think they're goin' to a sugar bowl, but here's what they find --
Now, the police at the port of entry say
"You're number fourteen thousand for today."
CHORUS:
Oh, if you ain't got the do re mi, folks, you ain't got the do re mi
Why, you better go back to beautiful Texas, Oklahoma, Kansas, Georgia, Tennessee
California is a garden of Eden, a paradise to live in or see;
But believe it or not, you won't find it so hot
If you ain't got the do re mi
You want to buy you a home or a farm, that can't deal nobody harm
Or take your vacation by the mountains or sea
Don't swap your old cow for a car, you better stay right where you are
Better take this little tip from me
'Cause I look through the want ads every day
But the headlines on the papers always say:
If you ain't got the do re mi, boys, you ain't got the do re mi
Why, you better go back to beautiful Texas, Oklahoma, Kansas, Georgia, Tennessee
California is a garden of Eden, a paradise to live in or see;
But believe it or not, you won't find it so hot
If you ain't got the do re mi