I'm not a muso or anything, so I'm not going to waffle on, no! This is just one of those songs that grabbed me instantly. It's a Bob Dylan song that The Byrds made better, only for it to be topped by an all-star cast covering it for Dylan's 30th anniversary; Clapton solo and everything. Shame the video is a bit rough!
The actual audio track is much better and can be found on Bob Dylan's 30th Anniversary live album. Less honest people could find it elsewhere, this service may be of use to them.