I think the band has a really cool sound on this album and it really foreshadows a lot of 90s alt-country. They're working withing the folk rock framework, but adding a lot of really interesting elements and taking it in new directions. Highlights for me are the title track, "Mr. Spaceman", "What's Happening!?!?!", and of course "Eight Miles High". Second side of the album isn't quite as strong as the first -- I'm not super high on their version of "Hey Joe", but overall, it's probably my favorite Byrds album. 4.5.