To illustrate my examples abound on this album: "riff raff" or how dymanmiter a rock starting from a mere agreement of (I could also take rock n roll damnation as an example), "gone shootin 'illustrate the guitar interplay between the two young brothers to achieve a title could not be more bluesy, "up to my neck in you" and chaining between both agreements can not be simpler (and ground) a slaughter that I recommend listen thoroughly. A rock n rollesque energy festival consisting tjrs to go to the essential, that's the style ac / dc! The master work throughout this album that I listen tjrs with as much pleasure even today, the music of this group is timeless. The high class all without taking the head and more, these guys are all inclusive so much rock that today if I had to define in one word what rock in the best sense of the term, and I just say my answer is: AC / DC !! and especially on this essential album in their discography