As I was goofing around with my guitar the other day, I played this, and wow, whadda you know.. well here's the riff from medicine man..

(Tune your guitar down a bit)

eb-----------------|
Bb-----------------|
Gb-----------------|
Db--7--5--3--2-2---|
Ab--5--3--1--0-0---|
Eb---------------3-|

Not much, but at least something. I might try with the rest of the song now that I have done this riff, maybe..