Drop D like so many of the other songs off "Endless Numbered Days". The G chord is never
fully strummed. Rather, a bass line that peddles the open strings is played. The C is a
Cmaj7 and technically the D is Dmaj6 removing the high E string entirely from the chord 
and in this case removing the B to open. But unless you strike the open B as clearly as
he does, it sounds fine as just a Dadd9. The clear striking of the open B is something 
he uses sparingly and it seems to slowly disappear as the arrangement continues. So strum 
each chord and strike the B at your own judgment to mimic the song.

Here is what I play. Remember, Drop D with a 2nd fret capo is required.


    Cmaj7        D6                 G
---------------------------------------------------|
---0---0--0------------0-----0------0----0---0-----|
---0---0------------2--------0------0----0---0-----|
---2---2--------0---0------------------------------|
---3---3--------0---0-----------0------2-----------|
----------------0---0------5----------------5------|

    Cmaj7          G              D6
----------------------------------------------------|
---0---0--0---0----0---0---0-----------0------------|
---0---0------0----0---0---0--------2---------------|
---2---2------------------------0---0---------------|
---3---3--------0----2----------0---0---------------|
-------------5-----------5------0---0---------------|

    Cmaj7      Dadd9
---------------------------------------------------|
---0-0-0-0---3-3-3-3-------------------------------|
---0-0-0-0---2-2-2-2------repeat entire song-------|
---2-2-2-2---0-0-0-0-------------------------------|
---3-3-3-3---0-0-0-0-------------------------------|
-------------0-0-0-0-------------------------------|