Sense Sonnet - Pumper

Duke

In 1914, I did do
My very first musical song.
I did it by ear 'cause 'twas true
My lessons were not far along.
I wrote it while a soda jerk
At the ol' Poodle Dog Cafe'.
And so I called my piece of work
The "Soda Fountain Rag". I'd play
It as a waltz, tango, fox trot -
Varied beats and rhythms that are
All the same song - just played a lot.
Folks would say, "What a repertoire!"

Guess that first song was not a fluke
By this Ellington, folks called "Duke".