12th Street Rag is another tune that I used to play with my Grandpa, and my dad as a kid. I didn’t really do anything fancy with it until I heard Danita Rast play it. While, I incorporated some of her fanciness in it, and a little of my own, she has one of the best renditions of this town you will ever hear. (There is a really tricky part that she plays that I didn’t even attempt in my version.) 
Twelfth Street Rag according to Wikipedia
The recording by Pee Wee Hunt was the Billboard number-one single for 1948, selling over three million copies. It was released as Capitol Records 15015 in May 1948.
Euday Bowman, the composer, recorded and published his own recording of the song, on Bowman 11748.
Donald Peers recorded the song in London on March 26, 1949. It was released by EMI on the His Master’s Voice label as catalogue number B 9763.
Its structure is: Intro A A1 Intro-2 A2
It has been best known as the theme to The Joe Franklin Show; the version most associated with the program was Big Tiny Little’s 1959 recording from his album Honky Tonk Piano (Brunswick BL (7)54049).
In the 1919 short “A Day’s Pleasure” by Charlie Chaplin, the African-American band is heard[dubious – discuss] playing a version of the popular rag while on the ship.
More recently, a ukulele version has been featured as background music on the TV series SpongeBob SquarePants.
Thanks Vi! Love the Rockies in the background!