[link to original on tumblr]
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I'm still struck by how it ends on a C major 7th. I think the song is mostly in C major, so ending on a C major 7th doesn't provide a sense of resolution, which provides the same sense of waiting expressed in the lyrics - "call me when you're ready / Whenever you're ready."
I also learned the introductory electric piano phrase.
I'd noticed the chromatic phrase in this before (A, Ab, G), but after learning the chords, I discovered that there's actually a Bb major before that part, so there's a chromatic phrase from Bb to G. That Bb is also in a bass, but it's in a different octave than the A, Ab, G phrase.