Long ago, when telephones were attached to walls and Sam Goody clerks roamed the earth, I stumbled onto a website whose proprietor possessed some of the sessions that Bob Dylan recorded with Johnny Cash back in 1969. One of the songs had gotten an official release, but the rest had been left in the vault, for most fans little more than an enticing legend.
It was 1996. In those days, acquiring illicit music on the internet was a low-tech, largely analog process. I sent the man an email, he agreed to share the recordings with me, I mailed him a blank cassette, and two months later the tape came back. It now contained one great performance—a cover of Carl Perkins' "Matchbox," with Perkins himself on guitar—and several endearingly sloppy ones.
