As for the individual songs, all of them are at least good, but some definitely stand out more than others. "Roots Bloody Roots" is a brutal opener and nicely showcases the completely fleshed-out Brazilian tribal elements in the band's music. "Attitude" is also killer and was co-written by Max Cavalera's late stepson, Dana Wells. The crazy "Ratamahatta" features Carlinhos Brown and is sung mostly in Portuguese. "Spit" is a great faster song, too. Really, though, there is not a bad track on this album (save maybe for the rather boring hidden track "Canyon Jam").
All in all, 'Roots' is essential to fans of Sepultura, thrash/speed metal, and nu/alternative metal alike. If you're new to Sepultura, I wouldn't recommend this as an intro, as it may be a little bit hard to get into. However, it remains an amazing musical achievement and secures Sepultura's place as one of the best metal bands of all time.