With the exception of the drum parts, the rest of the guys pretty much play the parts as 'written' live - especially Tony Banks. Rutherford's bass lines are not typical - he doesn't always follow the root (probably because he's really a guitar player.)
I recall listening to Wind & Wuthering - the first Genesis album I bought. I recall looking at that album cover, that tree in the misty distance, and just thinking that the music seemed to sometimes reflect misty, wet, rainy England.