From Rubber Soul. A confluence of several Beatles things. Acoustic folkiness, this still being John Lennon's Bob Dylan phase. A sitar part (and other exotica, in some mixes), from student George Harrison. Double-tracking of vocals, from the early part of the band's studio experimentation (later to lead to the hermetically-sealed aural Goon Show of subsequent recordings). Infidelity, as Lennon decides his first marriage wasn't all that.

Norwegian Wood