For me there are three types of songs, Ones I wrote, Ones I didn't write, but I know who did, and ones nobody knows who wrote them.

I think that sums it up pretty well.

Another way to classify them might be, songs I like to sing, songs I don't sing but like to hear, and songs I don't much like to hear or sing.

I find it pretty hard to relate to the way some people seem to get so aerated about categories when it comes to music and somg. Do the same issues arise over whether something is traditional cookery or not? Actually they probably do in some circles.