Hi Dean,
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... shutting down the browser after writing. That is, before clicking on "Submit."

That sometimes happens to me, too. We're getting old!

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I said it was a great performance! And I asked, "What is a remixing contest?" What is it that gets remixed? How do you win, and did you win this contest too?

Thanks.
In a remix contest they offer you instrumental and vocal stems to download. I usually only use the vocals. That gives me good voices without having to struggle with vocaloid programming.
They choose the winners according to their taste.
I have never won and I don't really plan to do so, as the prizes are usually publication on remix compilations which I'm not interested in.
It's a lot of fun for me to work with the stems. I even enjoy finding out the tempo of the tracks. It's like a puzzle that I like to solve.
It can be compared with the derivative works you often make.

Guenter