Kanye West produces “13 MUSIC” number with the help of Vic Mensa, Malik Yusef, and Pharrell. South Korean fashion brand Gentle Monster has enlisted the help of Kanye West, Malik Yusef, Pharrell Williams, and Vic Mensa to help launch their “Collection 13” marketing push. The whole process entails Kanye West producing an original composition for the brand’s new ad campaign, written in part by Malik …