Relentless

There are several bands using this name: 1) Relentless is a Punk band from Joensuu, Finland.
2) Relentless is a Hardcore band from Sydney, Australia.
3) Relentless is a Death Metal/Grindcore band from Sweden.
4) Harnessing the power of old and new technology, Relentless -- based out of San Francisco, California -- produces aggressive, dramatic house music that comprises an intelligent balance between pop and underground styles.