Here is the list of topics I wrote about for the 2019 Blogging A-to-Z challenge on the topic of music theory:
I posted all of them on time this year (7am Chicago time, noon UTC) except on April 13th. I'm quite proud of that. Last year I was less diligent.
I hope you've enjoyed the series. I'm looking forward to next April's topic, which I think you'll find timely and informative.