Kingfish in Concert contains the song medley "Lazy Lightning" / "Supplication", written by Bob Weir and John Perry Barlow. These songs became part of the Grateful Dead's repertoire two months later when, after a break of a year and a half, they resumed playing live concerts. The album also features "One More Saturday Night", as well as several cover songs that are associated with the Dead — "C.C. Rider", "New Minglewood Blues", "Around and Around", and "Promised Land".
In an interview quoted in the CD liner notes, Matthew Kelly said, "The one thing I remember about the Beacon Theatre was how great the audience was and how incredible the acoustics were. It was a great place to play. Big enough to make it exciting, but not so big, like the stadiums we played that had no soul.... There was some kind of chemistry with the first Kingfish that was magical. We were a live band, more so than a studio band. We worked off the audience. On a good night, when we played live, we were able to create some kind of special magic."