First of all I'm trying to break free of using TABS as much as I have been. I really want to work on figuring out some songs by ear. That being said I'd like to work on Led Zeppelin's 'Since I've Been Loving You'. Would love some input on this song, like what are the chords and maybe some of you can lend some input on some theory behind the bass in this song. I know it's not a difficult song but any tips would be helpful. One thing I'd like to know is the best way to find the chords being played and then maybe some info behind note choices? I don't know. Just looking for a starting point.