Justin Bieber, Chris Brown Rap on Asher Roth New Song 'Actin Up' [LISTEN]: DJ Drama and Don Cannon Host Rapper's 2013 Mixtape 'Greenhouse Effect Vol. 2'

Pop star Justin Bieber and "Fine China" crooner Chris Brown both appear on Asher Roth's new song, "Actin Up." The catchy rap tune will appear on Roth's upcoming mixtape entitled "The Greenhouse Effect Vol. 2," presented by DJ Drama and Don Cannon. Female rapper Rye Rye also provides guest-vocals on Roth's new track. Listen to Roth's recently-released "Actin Up" below! Read More »