just use a reggae beat, its basically the same repeating chord pattern the entire song.
original artist: mighty diamonds
chords from performance on 10/20/10 in Utica, NY
*performance from live phish 7 is all the chords down a full step (D A G D A)
Intro: E B A E B
Verse: E B A E B
Chorus: E B A E B
Have mercy on a good man, and help him we pray Jah man.
Have mercy on a good girl, and help her we pray Jah man.