kosmic_charlie said:

It's because they play any given song differently each time.  I think the Beatles is great but I get tired of them because how many versions of Lucy in the Sky with Diamonds I've heard?  Yep, one.  It's hard to get tired of the Dead because of the imporovisational nature of their music, not to mention the fact that the lyrics are so good and Jerry's guitar sounds amazing in my opinion.  With thousands and thousands of shows, there is a lot of material to choose from. 

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Exactlly!! They have such a vast amount of music. They never played the same song the same way twice. The improvisition keeps it fresh and new. So many years, so many songs ,so many different fases and styles. It never gets old. The secret is to get into there live music. Thats were the gold is.
I also listen to other kinds of music. I like lazz, bluegrass, and obscure shit. I listen to anything that isn't popular. I can't fucking stand commercial popular music. Most radio makes me sick. Just my opinion though.