In reply to nathan79:
Some of Bob Marley's songs were quite conscience pricking I think, in speaking of poverty and oppression, and asking what the listener was doing about it. What Marley did was to give his songs a poppy vibe to draw people into enjoying listening to them, while the lyrics weren't always so cheery.
I'd probably agree that Peter Tosh was the more intelligent of the 2, though, and that this came through in his songs.
Post edited at 15:35