That’s an exaggeration. Here are some songs from the twenties and thirties that aren’t about love, dance crazes or the south:
Chicago (That Toddlin’ Town)
Sister Kate
Pack up Your Sins and Go to the Devil
Barney Google
It Ain’t Gonna Rain No Mo’
Yes! We Have No Bananas
Nobody Knows You When You’re Down and Out
Cake Walking Babies from Home
California, Here I Come
Does the Spearmint Lose Its Flavor on the Bedpost Over Night?
Fascinating Rhythm
Hard Hearted Hannah
The Prisoner’s Song
wreck of the Old '97
Shine
The Death of Floyd Collins
My Yiddishe Momme
The Birth of the Blues
Breezin’ Along with the Breeze
I’m Just Wild About Animal Crackers
When the Red, Red Robin Comes Bob, Bob, Bobbin’ Along
Abdul Abulbul Amir
Crazy Words, Crazy Tune
Doctor Jazz
Me and My Shadow
Shaking the Blues Away
Henry’s Made a Lady out of Lizzie
I Faw Down an’ Go Boom!
I’m wild About Horns on Automobiles That Go “Ta-Ta-Ta-Ta”
In the Jailhouse Now
The Lonesome Road
Ol’ Man River
Ready for the River
Sonny Boy
When You’re Smiling
Broadway Melody
Happy Days Are Here Again
Painting the Clouds with Sunshine
Piccolo Pete
Singin’ in the Bathtub
Tain’t No Sin (To Take off Your Skin and Dance Around in Your Bones)
Hittin’ the Bottle
I’m a Ding Dong Daddy from Dumas
The Man from the South (with a Big Cigar in His Mouth)
Mysterious Mose
On Revival Day
On the Sunny Side of the Street
Puttin’ on the Ritz
Sing You Sinners
Strike up the Band
I Love a Parade
Mad Dogs and Englishmen
Brother Can You Spare a Dime
It Don’t Mean a Thing (If It Ain’t Got That Swing)
Let’s All Sing Like the Birdies Sing
Let’s Have Another Cup of Coffee
Shout, Sister, Shout
Forty-Second Street
Gimme a Pigfoot
Hallelujah, I’m a Bum
We’re in the Money
Who’s Afraid of the Big Bad Wolf?
Fare-Thee-Well to Harlem
On the Good Ship Lollipop
Tumbling Tumbleweeds
Animal Crackers in My Soup
Mrs. Worthington (Don’t Put Your Daughter on the Stage)
The Music Goes 'Round and 'Round
Summertime
Top Hat, White Tie and Tails
What a Wonderful World
Breakin’ in a Pair of Shoes
I Hope Gabriel Likes My Music
Pennies from Heaven
Pick Yourself up
San Francisco
Johnny One Note
The Lady Is a Tramp
A-Tisket A-Tasket
The Flat Foot Floogie
Joe Hill
Lambeth Walk
Beer Barrel Polka
Ding-Dong! The Witch Is Dead
God Bless America
If I Only Had a Brain
Over the Rainbow
So Long, It’s Been Good to Know Yuh
Strange Fruit
Three Little Fishies
We’re Off to See the Wizard
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