Further fusion sub-genres have since emerged , including pop punk , rap rock , and rap metal , as well as conscious attempts to revisit rock 's history , including the garage rock\/post-punk and synthpop revivals at the beginning of the new millennium .
These include pop punk , rap rock , and rap metal , as well as conscious attempts to revisit rock 's history , including the garage rock\/post-punk and synthpop revivals at the beginning of the new millennium .