I had this idea come to mind a few days ago. What if I combine the Waltz and the Sonata into a single piece? Since I already wrote several sonatas, I figured I would emphasize the Waltz part of this piece by constantly having a waltz-like bassline. I have finished the exposition of this piece. I made the first theme be more scalar in nature and the second theme have more arpeggios to provide melodic contrast, since the bass couldn't really provide much contrast besides key, being a waltz and all