P1-powered "Hammond B3 organ" video
Just came across this YouTube video from 2020 of Mike Rainbow's B3-on-a-P1 project.
It's based on user PropB3's work from 2012.
Mike Rainbow's name has come up here before. I used his instrument samples in my multitimbral synthesizer way back in 2009.
If you are interested in music, check out his video and the rest of his channel. He's got lots of microcontroller-based music gadgets.