The tune sounds like a take on the famed Boogie Woogie, but is in
essence a blues riff, and does not sound overly-specific. That it
starts with the melody on the ninth, and not the seventh, like Boogie
Woogie, removes some of the specificity, but it follows a similar
pattern, thus it may sound familiar. That's as close as I can come.
You probably figured out that it was followed by That's All Right Mama.