Justin Bieber was part of the song `` Lolly '' with Juicy J by Maejor Ali .
On October 3 , 2013 , Bieber announced that he would release a new song every Monday for 10 weeks as a lead-up to the film Justin Bieber 's Believe , which entered production in May 2012 and was released on December 25 , 2013 .
Justin Bieber