This is the closing theme to the well received anime series Ghost in the Shell: Stand Alone Complex 2nd Gig. A very befitting song to the show’s otherworldly, futuristic, humanistic theme of the series. A great series overall and definitely a must watch. If not for the story and animation, at least for the soundtrack.
Edit: how can I forget, the series’ soundtrack is spearheaded by the brilliant Yoko Kanno, who also worked on The Vision of Escaflowne and Cowboy Bebop.