usually the polite way of going about it is to credit the original artist in some way but it seems zeppelin didn't make any attempt whatsoever. dazed and confus

usually the polite way of going about it is to credit the original artist in some way but it seems zeppelin didn't make any attempt whatsoever. dazed and confused is a good example. its not just copying a chord progression and taking it from there, it was the whole thing, the name, the melody