Chris Brown Previews “0 To 100″ Freestyle

Chris Brown is getting back into the swing of things. After hitting the studio with Justin Bieber, he posted an Instagram video earlier today dropping some bars over Drake's "0 to 100." Fans of both might be on edge since Drizzy and C. Breezy haven't really been friends lately. Maybe, this preview is a sign that Brown's got some nastier lines stashed away? Check it out above.