It begins with a musical wake-up call: the harsh clang of a solitary guitar chord that hangs in the air for an elongated moment, its densely-packed notes swimming into focus like eyes adjusting to the light. (Though the song is in the key of G, this opening chord is a D minor 11th, as if a C-major triad were being played over a D-minor triad.) Two bars later, reality rushes in, as John's vocal pickup ("It's been a..." ) is swept up and carried along by a swift current of guitars, bass, drums...The momentum builds through another verse until, with a shout, the singers seem to leap out of the path of Harrison's twelve-string electric guitar and George Martin's piano as they combine on a deep, bluesy run that resolves in a delighted little jig-step of sixteen notes.The singing returns, the middle repeats, and finally, a full three minutes after it began, the song heads wearily for home, the band slowing imperceptibly, until the rhythm falls out and George's twelve-string explodes into the chord that opened the song--arpeggiated this time, its notes distinct and shimmering like stars against the sky.