Pink Floyd.

http://www.youtube.com/watch?v=uO6zOZHpPkk&feature=related

(While Syd Barett was still their lead singer.)

What did the Pink Floyd have in common with the Beatles?

The Pink Floyd was a unique group, just like the Beatles. They did their own thing and they were creative on their own way. One of the reasons I think they came very far in the music world is because they didn't use a lot of other artist. They did their own amazing thing that people seemed to like very much. This is also a thing that the Beatles did, I believe. This makes the two groups so unique.

What did they have in common with the the Velvet Underground?

Just as the Velvet Underground the Pink Floyd had periods that they were also very into rock. And just like the Underground Pink Floyd manipulated their stage presentation with the active power of their music.