King Crimson - 21st Century Schizoid Man (Live, 2015)

Same lineup, even better song (audio only): Red.

There are a couple of other recordings from the same lineup, but this seems to be the best performance and recording of the song.

I got to see this lineup twice (once in 2014, again in 2017). I'm sad I won't see them again. Truly a legendary band, with some incredible music.