KERA in North Texas sponsors Art & Seek: A Community for Arts, Culture, and Creative People. A part of their postings, usually on Friday, are "This Week in Texas Music History."
In order to find a long list of entries, select "Features" and search for "This week in Music History" and you'll receive many entries. Click on each entry and you'll receive a fuller essay, and, yes, Virginia, audio is an option.
Navigation notes remind you that "You can also hear This Week in Texas Music History on Friday on KXT and Saturday on KERA radio. But subscribe to the podcast so you won't miss an episode. And our thanks to KUT public radio in Austin for helping us bring this segment to you."
The current listing is on Scott Joplin, the ragtime man.