On Wednesday, Justin Bieber began tweeting and sharing on Instagram tracks from Purpose, his latest album, via photos of graffiti on walls located around the world. The album includes high-profile collaborators, including Big Sean, Travi$ Scott, Halsey, Diplo and Skrillex of Jack Ü. Purpose is Bieber's fourth LP and his first since 2012's Believe. He released Journals, a compilation of new songs in 2013. His new Kanye West-assisted album is out November 13th.