It's hard to say at this point, but they were always on the air while I was a baby, and growing up with a radio on, I'm sure I was weened and lulled to sleep on their first three albums. Later, as a pre-teen I got my fist AM/FM radio and tuned in 102.7 WNEW in NYC. Once I realized it was Led Zeppelin I had heard as a kid, I was quickly hooked. Their music took me places, and some tunes haunt me still. They are still my fav band, and always will be. I took my bro to see Page & Plant in the Meadowlands, here in NJ, years ago. It was like a dream come true. I hope I'll catch the remaining members live again, this side of heaven.