I don't think there's been much discussion of this disc. There are two lengthy tracks, "So Long Eric" and "Praying with Eric" (aka "Meditations for a Pair of Wire-Cutters", "Meditations on Integration"). The lineup is one of the greatest Jazz Workshops, maybe THE greatest: Mingus, Johnny Coles, Eric Dolphy, Clifford Jordan, Jaki Byard and Dannie Richmond.
I've only heard one other performance by this group, the one released by Verve as The Great Concert of Charles Mingus. They each have their strengths -- I think the Town Hall version of "Meditations" is stronger. Coles adds a lot to the ensembles though I'm not crazy about his solo improvisations. In addition, Clifford Jordan has probably the strongest solo on this tune -- remarkable when you consider that Eric Dolphy's bass clarinet is involved. I also think that in general, Byard plays better here than on the Paris concert. Finally, Dolphy plays some of the most poignant flute I've ever heard from him.
With "So Long Eric" I might have to give Paris the nod because of the Dolphy-Jordan interplay, but the version here is excellent.
Anyway, if you haven't heard this I recommend picking it up.
Guy