Pat Barber just kind of noodles on the keyboard. I think she has great intuition and a good sense of space, like she's painting a pointalistic painting, but I don't think she's all that harmonically sophisticated.
(The last time I saw her one of us was drunk or high off of our ass and it wasn't me -- )
I don't really think "Tempted" is that far out there: Just play a 1 chord in the right hand and walk your left hand down the keyboard: whole step, half step, half step, then 2 minor, 5 chord, then back to 1.
Check out the soulful cover of "Tempted" on Chaos records.....