Irving Berlin - Wont You Play A Simple Melody chords

Note: The first note I sing is a G (on "Won't). This may not be the key typically used,
so use a capo to fit your vocal or preferred style/sound. I also wrote this as a sort of
cover, so for those who sing the sing note by note, it may not fit (see post script). 
This is my first tab so I hope you enjoy it =)
P.S. I am open to critiques.


[ Tab from: http://www.guitaretab.com/i/irving-berlin/340438.html ]
G                   Em
Wont play a simple melody
C                   D
Just like my mother sang to me,
G                           Em
One with good old fashioned harmony
C             G
Play a simple melody

G
Musical demon, set your honey a’dreamin’
Em
Won’t you play me some rag?
C
Just change that classical nag
D
To some sweet beautiful drag

G
If you will play from a copy of a tune that is choppy
Em
You’ll get all my applause
C
And that is simply because
G
I want to listen to rag



Pretty much the same chord progression throughout the song.