Let's see now, it was Pete Seeger who said something to the effect of - We don't need so many new songs, just the courage to sing the old ones again.

To be truely awful, a song must have a useless tune and stupid words. How about:

I've been to the desert on a horse with no name,
In the desert you can remember your name,
'Cause there ain't no one for to give you no pain...

Yech!