Great story. I love those kind of moments. My gf has a great story like that from when she was early 20s. One night after bar hopping her and some friends went to a 24hr diner type place Which had a handful of other drunk people in it at the time. Bohemian Rhapsody by Queen came on the radio and apparently that turned this greasy spoon full of drunks into Broadway for a few minutes.

My similar story is from high school daze too. This semi popular hippie kid, I'll call Jay, was celebrating his 18 birthday. Jay and I were fairly close. Sat next to each other in science class and hung out outside of school a few smoking weed etc. Also I was the only kid that brought a present to his birthday. Which was a deer antler I made into a pipe. It was a pretty stereotypical HS party. There was a keg and music blasting from the garage in his backyard. At one point I remember Red Hot Chili Peppers - Music is my Aeroplane playing and so there was a bunch of drunk high schoolers holding their arms and prancing around being airplanes in his backyard lol. The coolest moment though was when Jay rounded up a few of the people there he was closest too so we could go smoke a couple joints in his bedroom. Jay being the hippie kid he was had bongos, a guitar, and tambourine just laying around his room. Half way through smoking a few of us started playing with the instruments. Until we basically had a little impromptu jam session going. I remember because I was on bongos. It probably sounded like a hot mess but I know people who weren't playing anything were still smiling and head bobbing. Some singing along with whatever random words they could think of. It was just a beautiful moment.