Links not working for me. I'll have to google around when I have the time.
I always write the lyrics first. I just wrote a song tonight. I have trouble with the music/cords. I just don't know enough. I have started to use the Nashville number system a bit to help. I figure out the opening and the work around the other cords to find the sound.
I can sing most of my songs. They are simple acoustic blues kind of stuff...... sometimes more folk or country.....
I don't have a deep musical background but I don't let that stop me from doing, learning more, playing, writing......