Why Stop Now is a hip hop song by the American rapper Busta Rhymes. The song features American pop artist Chris Brown. The song is an official single of Busta Rhymes' upcoming 9th studio album E.L.E. (Extinction Level Event) 2: End of the World. Busta Rhymes uses his "speed rap" style in all three verses along with a techno beat. Chris Brown sings the chorus with aggression. The song was released after his last single "Stop the Party" which featured American rapper and record producer Swizz Beatz. The song was released as a free launch exclusive for Google Music, and is only available digitally through that marketplace.