1967 1968 1968 1968

usually one may try to make comparisons of sound, I am not attempting to do that; just providing a listening experience. These are all psych pop bands from the years listed in the title correspondingly, and until today I've personally never heard any of them.
Whats amazing about youtube is that now you can just hear all this shit without having to track down the original LPs or 45s, and you can hear more by looking at the similiar videos, youtube is amazing! and fun!