Both kinds of music being country and western, of course.
So in old timey C&W music it was common for there to be a sugary, overly-sentimental, and twee acrostic to be inserted into the song. A parody thereof can be found here at the 2:20 mark. T is for Dolly Parton, indeed.
However, I’m damned if I can think of an authentic example of what this is poking fun at. Can anyone point me to some off the top of their heads?
Indeed! Doesn’t qualify under the “sugary, overly-sentimental, and twee” criteria, but I’m always happy to see how these things manifest across genres!