I'm not a musician or a song writer, but just before the book was released, I recorded the song. In those days, book trailers were rare (or not yet invented). I don't recall a book with its own song. But without social media spreading the word of the book with a song was difficult to say the least. So the recording wasn't useful as a marketing tool.
I just found the MP3 to Lonesome Song and decided to post it to the Lonesome Song book tab on my web site. The song is cheesy for sure. The music is clunky. But if you find yourself in curious mood, downloaded it, If it helps, think of it as a clue to a murder. If you raise your eyebrows or simply start laughing, it's okay.