Man I'm so glad to have come across your post this morning. I'm a photographer and an avid music fan so I combine the two to write articles on bands like Lucero, Cory Branan, I've done Lucinda Williams as she's from my homestate, Jason Isbell and so on. I have spent a lot of time listening to and studying the songwriting of all of the artists you mentioned in the beginning. I know it can be rude to promote your own stuff in comments but since you're a musician in one of my favorite genres, I wanted to tell you I just finished an article on Last.fm and music scrobbling in order to do some awesome music discovery. If you're on Last.fm, connect with me at @mrrettig78 and if not check out my article on it and you'll probably appreciate what it can do. Thanks, are you on Bandcamp or Soundcloud?