The son I can get no satisfaction by The Rolling Stones originally was supposed to have horns instead of the opening guitar riff. 
Hey, I didn't know that! What else can you tell me about the Stones!
In 67' they played around with a psychedelic style of music but the year after returned to rock style music.
Which album was psychedelic, can you tell me? It's been a very long time.
I do not think they released the psychedelic stuff, I know that Pink Floyd did a lot of psychedelic music though.
Everybody was experimenting with psychedelia at the time, starting with the Beatles. I remember Pink Floyd's Dark Side of the Moon, which was a bit later, I think.
They actually recorded the making of Dark Side of The Moon in 72' 
Yeah, I thought so. The last band I played with was '70, and I know we didn't do any of the songs from that album. We did do plenty of Stones and Beatles and Hendrix. 
The 60's was the golden era of music undergoing massive change with popular music.
Yes, indeed. The British Invasion! It was a fusion of the rock & roll of the '50s with fresh ideas from classical and world music.