Hard Rock Sofa might have an odd name but it’s one that you can’t avoid. Having had two Massive miami anthems in “Here We Go” and “Rasputin,” the group newest release “Collapsar,” a collaboration with Dirty Shade, is sure to join the ranks of other big time anthems. It’s not a mammoth like “Rasputin,” but “Collapsar” (which was supported at Ultra by Tritonal) will keep getting more support as the Russian duo has delivered another edition of their unique, big room grinding electro sound. It is in the track’s breakdown that we really hear how the two groups have captured their Russian essence. Close your eyes and just listen, you can’t help but imagine yourself on a snowy night in Moscow’s darkest clubs with pulsating strobe lights.