Back in the day of silver-based photography, images like this would be close to impossible without high-speed film, a very wide aperture, and rock-steady hands.
Ah, the joy of pushing High-speed Ektachrome to ASA 400 and shooting at f/1.4 for 1/30 second handheld! And it would be super grainy, have a very shallow range of focus, the colors would be off, and there would be a tiny bit of motion blur. I liked to call it "available darkness photography."
In 2005 I photographed a stage performance in a dark bar, no flash because it wasn't allowed... On a film camera, I forget what kind of film speed it was, the results were awful, admittedly at the time I had very little experience with photography at all, especially such a difficult situation
And one from last summer, does this count? A couple dancing very briefly as they passed a music stage at a night festival, at the time I didn't get the photo I wanted, I wasn't prepared for it... I did get this photo which I first thought was a failure (because it wasn't what I wanted), but after further examination I quite liked it in a different way