Yes, but as of NOW, a contemporary song is just that, not traditional. As the opening post was a request for performers of traditional material, to list contemporary songwriters (however good) is irrelevant, illustrating your inattention to the matter at hand, or even insulting to the original poster. You know what's good for him, even if he doesn't.
There is the more serious point: now that we have extended copyright, artist's estates and a heavily bureaucratic culture, is there not a permanent division between traditional songs/music and that where the origins are known and protected? On theother hand. I know of a couple of current songwriters whose material has been declared traditional already.... I don't think that they're best pleased, generally.