Electronic, Music, Songs Kaskade vs. Hard Rock Sofa – 4 AM Quasar (Kaskade Mash Up) [Electro House] Audio 10/22/2012 David G. Stream “4AM Quasar” Here: Download: Kaskade vs. Hard Rock Sofa – 4 AM Quasar (Kaskade Mash Up) Mobile Download: Kaskade vs. Hard Rock Sofa – 4 AM Quasar (Kaskade Mash Up)