“and goes on thus contentedly to the end”

“and goes on thus contentedly to the end”

He learned to change a canon’s form when need

Required a shift. He might repeat a tune

Two measures later underneath the seed

He planted.  Still, if that did not commune

When he went on in combination, he

Would then commit the blending after just

One measure next time.  Practicality

Was wise.  His attitude was cool, robust,

And flexible.  So music ought to come:

What matters is the beauty, not the norm

Completely.  Early on aesthetics from

His pen were freed up from right rigid form.

..So he (in canon and in later shapes)

….Through freedom found out new ways for escapes.

This poem is part of a shorter sonnet sequence within this large sonnet sequence called The Encyclopedia Sonnetica.  The shorter sonnet sequence is called “A Lively Hope.”  I recommend you read this poem where it is set in its sonnet sequence.  To do that, search for “A Lively Hope” here in The Encyclopedia Sonnetica, or you may see an illustrated version the entire shorter sequence at
https://classicalpoets.org/wp-content/uploads/2018/02/A-Lively-Hope.pdf 
where it was first published.