Rap metal is a subgenre of rap rock fusing vocal and sometimes instrumental elements of hip hop with heavy metal, with influences of hard rock. Rap metal is often confused with rap rock and rapcore. These styles became the basis for nu metal. Rap metal originated from rap rock, a genre fusing vocal and instrumental elements of hip hop with rock. The genre's roots are based both in hip hop acts who sampled heavy metal songs, such as Beastie Boys, Cypress Hill and Run-DMC., as well as rock bands who fused heavy metal and hip hop influences, such as 24-7 Spyz and Faith No More.