Not what you are looking for, but Elizabeth Ann Scarborough's Songkiller Trilogy is excellent. Click and scroll about HALFWAY down the page. Here's what she says about it:

THE SONGKILLER SAGATHE SONGKILLER SAGA BOOK 1 THE PHANTOM BANJO, : BOOK 2 PICKING THE BALLAD'S BONES, BOOK 3: STRUM AGAIN?

THE SONGKILLER SAGA is actually the only trilogy I've done intentionally. After three very serious books, I was ready to laugh again and go back to the things I love, like folk music and ballads. Folk songs and music in general are actually more important in many peoples' lives than they realize. Throughout history, music has been what gets people through tough times, bad deals, and sometimes danger. It punctuates life events and occasionally carries the news. It has been known to bring rulers to their knees and governments to their senses.

An international consortium of devils have decided that it has to go. Folk music is just too potent to be allowed to continue. They start by wiping most songs from peoples' memories and also by killing off some of the more prominent culture-bearers among musicians. My little band of musicians wants their toons back and travel the country and the world to accomplish their mission.

The tone is sort of Southern Gothic from the viewpoint of a lady named Gussy who is in on all the proceedings, including the mechanations of a debauchery devil named Torchy who ends up siding with the musicians against her fellow devils because, as she says, "musicians have always been among my best people."

Unlike my book, it seems right now like the devils won the day. You don't hear a lot of folk music anymore, do you? It seems to have fallen out of fashion. Maybe we should be asking why.