There are several bands using this name: 1) Relentless is a Punk band from Joensuu, Finland. 2) Relentless are a five piece hardcore band from Sydney playing aggressive in your face music and. They have been together since mid 2006. They have finally got a secure line up with all five members commited and are all level minded about the music they are playing. Debut album "Set In Stone" out now through Dogfight Records. 3) Relentless is a Death Metal/Grindcore band from Sweden. 3)classic hardcore band from long island