Have never heard of this group until I was the KISS concert in Zurich. Rival Sons was the opening act. This group has surprised me. Has a very own style. It is a combination of hard rock with gospel / blues and a touch Californian feel. Touched "Woodstock" you can imagine. The singer has a hammer strong voice, which fits very well with the music direction. Rival Sons have won headdown a new fan (me).
