The subtitle of "Wave Of The Rock 2" is "Metal Music, from contestation to occultism".Many of the songs mentioned are played with truly impressive power and energy, now all this: was it the desire for justice, the effect of drugs or the use of occult forces?Also in this second chapter we will leave out the biographical aspect and we will dedicate all the technical-instrumental aspect of the type of sound used to express all that previously said and the type of texts. We will do all this as always by citing the most important protagonists of each Metal genre, the most famous songs and suggestive images.A fairly discussed musical genre much more than rock in which in the end we will make considerations.