Gen Neo and Casper collaborate for a fabulous concept video! The talented artists unleash an Urban R&B cover (mashup) of Wang Leehom’s “Nibuzai” and Justin Bieber’s “Heartbreaker”. Gen Neo recently collaborated with Henry of Super Junior M as they covered David Tao’s “1030” and now his cover/mashup with Casper is gaining a great response for the great video and sound.…