This Vince Guaraldi song has an incredible series of chord changes. The whole thing sounds like melting snow. At the request of one of my students I wrote a jazz chord-melody arrangement of the song which you can download below.
That being said, let's first just look at the chords for the song as we would if this were a guitar lesson here at the studio:
Very rich sounding chords indeed, and not exactly easy to play. But worth the effort. In order to get the melody on top of these chords, I've had to alter the voicings somewhat. But I think you'll be pleased. Here you can download the song, or just view the tab below.