I put in Doc Watson and got an interesting stream of songs. They did mis-label Doc and the Kentucky Colonels doing "Footprints in the Snow" - but they came up with everyone from Charlie Poole to the Carter Family to Pete Seeger. Quite impressive.

Then it wanted me to "register" for the free service, at which point I stopped. What do they get out of it, other than a cookie on your
computer ??