I know this varies, but I have this song 99% down, note-for-note, ready to play live if I wanted to. How long did it take? Didn't keep exact track, but would learn a section here and there when I have time. I'd honestly say probably 8 to 10 hours. That includes learning the notes and parts entirely by ear, getting the feel and timing down, then practicing run throughs over and over until I had it down cold. Is that excessive for one song? haha.