[H] 1TF2 Key [W] IHF Handball Challenge 12 + The Secret Of Hildegards

It seems to me, that but a single key
Is a paltry sum to pay for poetry
A humble boon, when granted to those who demonstrate creativity!
You must think to yourself "Why, a key per poem, that's all you ask of me?"
Why yes, that's right, exactly!
So if we will, and I will will to write if you will will to pay
Then I dare say we'll both have a pleasant day!
I'm inclined to believe that this poem will be perceived as worthy of being conceived
And that I will be moderately compensated for having demonstrated such grand, illustrious wordplay.

One key per poem. You have the right to do what you will with the poem received. You can tell me what subject(assuming it's..... scrupulous) you wish me to write around