I think they're all traditional public domain songs with some DB embellishments. In the AFM version of HBT the first character was a young poet on a bar room floor. On HCtNFU it was a investor who lay drunk on his boardroom floor. And then back to this release it's back to the young poet which I think fits the story better.

My impression is that these tracks weren't entirely meant as a standalone release - more of a collection of tracks that could be used for movies, films, etc - as their origin is a site that does just that.

My fav track is probably John Henry.