This poem is a product of the fact that I couldn’t get past the similarity of the words ‘sonnet’ and ‘sonata’ out of my head (and they do have similar roots). I’m not sure what to take from this, other than that puns may not always be the best basis for poetry.

Begin as always with a tonic theme
Expositing a stately melody
Then answer dominant enters the scene
A contrast in the mood and harmony
Develop, then, the themes that went before
In exploration of some modulations
Where fragmentary tunes repeat once more
In sequences that lead to revelation
Present again theme one and then theme two
Now recapitulating, coming home
But both now in the tonic key ensue
No more in modulations will they roam
And thus by following the forms of art
We, on a journey, take the human heart