This one really takes me back to when I started working as a technician. I'd been on the job almost a year in 1978.
Some friends at work decided to put together a band to do a few tunes for the company Christmas party in the cafeteria. They asked me to help out. I'm not a musician. I've done roadie stuff, sound, some recording, and some CD mastering. I have had a keyboard or two just to mess around on. At the time, I had an Elka Rhapsody string synth and they talked me into trying to play Nights In White Satin. They had a really good flute player and the song was perfect to showcase him and they thought I could muddle through the string parts.
So, we're playing the song. It didn't sound half-bad. We're in the middle of the flute solo and someone in the cafeteria turned on this conveyor belt that takes dirty dishes to be washed. Well, that belt wasn't supposed to be in use and we had several amps placed on it! We had a momentary train wreck while people scrambled to save the amps. But the flautist and the bassist kept playing and the rest of recovered fairly quickly and the belt got turned off right away. I think I have a cassette of the performance around here someplace. I should find that thing and transfer it to digital.