"Day and Night / Day & Night" is a pianist and electronic musician B6 Song Siheng cooperate neoclassical electronic music and multimedia art project combining music. "Day and Night" In classical musician Chopin's famous "24 Preludes / 24 Preludes Op.28" modeled conducted twenty-first century, "the composer (Recomposed)". "The composer / Recomposed" concept is a new concept of classical music Classical music famous German company Deutsche Grammophon presented classical music and electronic music combining belong to the "neo-classical / Neo-classical" in front of the more mature model.