In the early 1990s we got what was often called "a Sky television system" in shops, though it was actually an Astra system that carried many television channels of which just a few were from Sky television, some subscription, but two, at the time "in the clear".
Yet there were many other channels in the clear, mostly German channels, though Eurosport was in English - I think it had several language sound options. So one evening I was looking through the channels and I saw a programme on the German channel Sat-1 of what I learned is called volksmusik. It was, if I remember correctly, broadcast on Tuesday evenings from 8:15 pm to 9 pm German time, which was usually 7:15 pm to 8 pm English time, except, until Summer Time in England got extended, it was 8:15 pm to 9 pm, for about four weeks in the Autumn.
I later found that volksmusik shows were on various channels and there were also sort of Eurovision Song Contest programmes of volksmusik involving Germany, Austria and Switzerland.
Alas, these days, live German television is region-blocked on the internet feeds, but I get to see some videos on YouTube, including some of performances that I remember first seeing on television in the 1990s.
Here are links to some videos where dirndl style, or similar, I am no expert on the topic, is being worn.
www.youtube.com/watch?v=6sfgqG1I7nM
www.youtube.com/watch?v=Xe_RtoYtJ_A
www.youtube.com/watch?v=vR9tXqq46ss
www.youtube.com/watch?v=CXYf0H8jIHk
www.youtube.com/watch?v=pALzK-vo-Tg