I found the Leadbelly Last Sessions recordings on Spotify, and I'm listening now. I think the sound quality is far better than earlier recordings, and that makes this set a pleasure to listen to.
Having Spotify makes me wonder if I should stop or curtail buying recordings. Spotify doesn't have everything, but it has a whole lot of wonderful music - including what seems to be the entire Folkways catalog. But gee, I'd hate to have this source dry up and deprive me of my Folkways access.

-Joe-