Emerson, Lake & Palmer performed on this day in 1978 at Colorado State University in Fort Collins, Colorado.

The final leg of ELP’s Works Tour was due to end quite soon, but the group made sure to squeeze in as many concerts as possible in that time. This included a visit to Colorado, a place they did not often go to while on tour. This also signaled a return to the cooler weather the group had gotten a bit of a break from while in Arizona two days prior, with temperatures at Fort Collins that day averaging just below freezing (source).
Interestingly, this concert is not even listed on setlist.fm!
There is no known recording of this concert.
The exact venue of this concert is also not known. Based on some research, it appears that the band performed at Colorado State University, as the “University of Colorado” that is often listed as the place of performance does not have a campus in Fort Collins.