Although played on a banjo, it remains a standard sequence of chords that can also be 
on guitar... To obtain the banjo effect, it is best to finger-pick the majority of the 
with the occasional strum...

An excellent song...
Enjoy...

Chords:

      EADGBE
G:    320033
C:    332010
D:    000232
G7:   320001
C/B:  020010
Am:   002010

Intro: G, C, G
       G, D
       G, G7, C, C/B, Am7
       G, D, G

Verse One:

G                             C               G
Mr Frog went a-courtin' and a-he did ride, Uh-huh...
G                                          D
Froggy went a-courtin' and he did ride, Uh-huh...
G                          G7
Froggy went a-courtin' and he did ride...
C          C/B    Am7                G       
      G
A sword and pistol by his side... Uh-huh, uh-huh, uh-huh...

-----------------------------------------------------------
The chord sequence of verse one is used in the remainder...
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Outro: G, C, G
       G, D
       G, G7, C, C/B, Am7
       G, D, G