In my case it was very nearly a year ago. A contemporary opera, which I had my doubts about - having only seen one about 30 years back and finding it immensely dull (I should have twigged since they were handing out free tickets: the only reason I went. However this one was actually pretty good: Violet by Tom Could and Alice Birch - a metaphor on climate change with a great concept and some memorable performances.
It was part of a festival, and I also saw a couple of comedy shows in the fringe, both needing a deal of work before they would be going much further.
I was surprised to realise how long back these were. There was a time when I would expect to get to some type of stage performance at least every few months or so. However, I live in a fairly rural situation now, and it doesn't happen so often.
How about you?
Went a month or two ago to see Peter Pan Goes Wrong and it was hilarious, highly recommend. Before that, probably Hamilton circa 2019.