Justin Bieber's no stranger to Hip Hop: The Canadian pop sensation got huge on a track that features Ludacris.

The 21-year old's fourth album (and first as an adult) Purpose drops November 13. If its writing credits -- which hit iTunes today -- are any indication, it's going to have a big rap presence.

Among the names on the album are Mike Dean, Jacques Webster (Travis Scott), Sean Anderson (Big Sean) and, most surprisingly Nasir Jones (Nas.)

Ed Sheeran,  Skrillex and Diplo are also in the credits.

Bieber insiders have been calling Purpose his Thriller. Bold talk, but it certainly looks like he's convinced some big names it's going to be huge.