lumdeloo if we used glen's autobiography as a general source it would rule out much of the country genre i believe he stated that he doesn't believe himself to be a country performer there are quotes on the back of certain cd reissues where glen dismisses the country genre as well as a musician myself i'd argue most of his output was folk there was no sixties pop sound imo you could easily label the albums as pop but sixties pop versus seventies pop versus eighties pop versus nineties pop are all different for instance one may consider hall and oates rich girl to be a pop song but the bigger than both of us album has several genres mostly rock so i'll take some free time to compile all the glen quotes info i can when i can and try to work with you to come to a decision i must say though most sources will work in your favor despite my disagreement with them hopefully this can be a fun collaborative project