I was bought up on the idea The Grateful Dead were as bad as music can get, and was just one endless noodle. I guess many of the punk generation can say the same.
They don't seem to get any radio play or anything, so I never actually heard them for many years.
So when I did finally (and accidentally) hear a bit it wasn't as bad as I expected. Sounded a bit Americana if I remebr correctly.
Not really heard them since, but one of these days I might follow up one of the suggestions.