I really like this, it fits really well with the whole baking theme.

I think the melody is taking a bit of a backseat here, which it really doesn't have to. The tuba and harmonica can be a little quieter to give the piano and other melody instruments a little more space to shine. So the only thing I can come up with that you could improve upon has nothing to do with your composition and really only deals with the mix. 

I also really love how you are presenting the vinyl aesthetic, with the filtered sound at the beginning and the end, and particularly the stop effect at the end. 

Ooo the little piano lick at the A section before the end of the bar is really cute~

Fun tune, I think you nailed the ragtime aesthetics! I especially liked the descending bass line, and then the surprise flat VI from IV - V - bVI - I turnaround! Definitely caught me off guard in a good way!