If you can determine the date of that performance you can find the then current lineup of The Hawks. There’s a list by year at wiki:
https://en.wikipedia.org/wiki/Ronnie_Hawkins#The_Hawks_lineups
If it’s Fall 1961 to late 1963 it’s The Band
I also see Roy Buchanan was in the line-up for a couple of years. Buchanan was one guy who was under appreciated as a guitarist, having never got the level of national attention he deserved.