It’s another solid week for the West Coast and it now includes the newest single from RJ as he links up with DJ Mustard for “Brackin.” As Complex Premiered, “Today, they announce 400 Summers, a joint venture between YG’s 4 Hunnid and Mustard’s 10 Summers labels, with RJ tapped as the first artist to join. He’ll also be releasing his new project, Mr. LA​, on the label later this month.” Listen below.