What makes Sky Is Over by Serj Tankian notable?

'Sky Is Over' received critical acclaim for its lyrical depth and innovative arrangement, charting on Billboard's Hot Modern Rock Tracks. The single also showcased Tankian's commitment to addressing social issues through music, reinforcing his status as a politically outspoken artist. Released on February 15, 2008, 'Sky Is Over' marked Serj Tankian's first solo single following his departure from System of a Down. At this point in his career, he was exploring a more eclectic sound that incorporated elements of opera and pop, signaling a departure from the nu-metal style that brought him fame with System of a Down.