Both cds offer alternate takes of many of these songs, which is a nice thing, so as to allow the listener to follow the evolution of the tracks. (Some, like Peter Tosh's "400 Years," do not change much, while others, like Marley/Tosh's "Concrete Jungle," change a lot)

While not by any means a complete collection, these cds will be a good way to start listening to the evolution of reggae's most endearing band.