Entertainment Weekly praised Bieber's musical change, contacting the album each a "reinvention and a reintroduction". On My World 2., Bieber's voice was pointed out to be deeper than it was in his debut EP, due to puberty. On October 3, 2013, Bieber declared that he would launch a new song each Monday for 10 months as a lead-up to the movie Justin Bieber's Believe, which entered generation in May 2012 and was released on December 25, 2013.