A 1937 song by Fats Waller, co-credited with Andy Razaf and J. C. Johnson
Waller copyrighted over 400 songs, many of them co-written with his closest collaborator, Andy Razaf. Razaf described his partner as "the soul of melody... a man who made the piano sing... both big in body and in mind... known for his generosity... a bubbling bundle of joy". It is likely that he composed many more popular songs than he has been credited with. When in financial difficulties, he had a habit of selling songs to other writers and performers who claimed them as their own.
https://en.wikipedia.org/wiki/Fats_Waller
They have a new expression along old Harlem way
That tells you when a party is ten times more than gay
To say that things are jumpin' leaves not a single doubt
And everything is in full swing when you hear somebody shout
The joint is jumpin'
It's really jumpin'
Come in, cats, and check your hats
I said this joint is jumpin'
The piano's thumpin'
The dancers are bumpin'
This here spot is more than hot
In fact, the joint is jumpin'
Check your weapons at the door
Be sure and pay your quarter
Burn your leather on the floor
Grab anybody's daughter
The roof is rockin'
The neighbour’s are knockin'
We're all bums when the wagon comes
I said, this joint is jumpin'
The joint is jumpin
It’s really jumpin
Even Mose is on his toes
I said this joint is jumpin
Oh-oh, no time for talkin
This place is walkin
Get the jug and cut the rug
I said this joint is jumpin
Get your pig feet, beer and gin
There’s plenty in the kitchen
Who was that that just walked in?
Just look at the way he’s switchin
Oh, mercy! Don’t mind the hour
I’m in power
I got bail if we go to jail
I said this joint is jumpin
I mean this joint is jumpin
Don’t give your right name, no, no!
