Ever since the release of their widely heralded 2012 album, 'Danger Zone', Hardline have been offering a straight-ahead, gritty, riff-based Melodic Hard Rock sound which is a continuing evolution as demonstrated by their new studio album, 'Heart, Mind And Soul', released last week, of which their track, 'Surrender' is one of today's six 'July Frontiers Rocks!' Tracks Of The Day, complemented by five new tracks from Frontiers albums released yesterday by Heaven & Earth V, Inner Stream, Rian, Resurrection Kings and Big City.