I have a recording of "Leadbelly's Last Sessions: Volumes 1 & 2". Unfortunately I've packed all my vinyl away and store these things on tape so I don't know the recording label. I'll see if I can dig it up. This is a "sort of" live album. You can often hear other people in the studio joining in or making comments. There's a lot of dialogue after many of the songs and it's pretty much all solo performances. This may be the one you're after.