RadioLab, a wonderful NPR show that usually focuses on science, delved into the realm of music with a fascinating piece about the folklore and fakelore surrounding Robert Johnson and his supposed deal with the devil.

The piece is about half an hour, and very well done. Among other things, they discover that the story about the devil and the crossroads was originally told about another bluesman, Tommy Johnson (no relation), and became attached to Robert Johnson only after academics got involved. They also cast doubt on the famous death certificate and Robert Johnson's date of death.

All of which sounds like a bit of a bummer, but it's actually a great listen. Listen here.